FBM same-day shipping and FBA prep from one shared inventory pool. Direct Amazon Seller Central API integration. Valid tracking number uploaded to Amazon within minutes of label creation. FNSKU labeling scan-verified before FBA inbound. Zero FC rejection rate on prepped shipments. Same-day shipping for FBM orders before 2 PM PST — keeping your valid tracking rate, order defect rate, and on-time shipment rate green from a Los Angeles 3PL 8 miles from the Port of LA.
FBA prep turnaround
FC rejection rate
FBM ship cutoff (2 PM PST)
Scan-verified pick accuracy
A streamlined six-step process turns every Amazon FBM order into a same-day, scan-verified shipment with valid tracking uploaded to Amazon within minutes — protecting your seller performance scorecard from one Los Angeles 3PL handling FBM, FBA prep, and Seller Fulfilled Prime from the same inventory pool.
Direct API integration with your Amazon Seller Central account — FBM, FBA, and MCF support from one connection. SKUs, FNSKUs, ASINs, and current inventory levels sync automatically. No middleware platforms charging $50-300/month, no developers, no manual order export workflows.
Ship inventory to our Los Angeles fulfillment center via container, LTL, or small parcel. Container drayage from the Ports of Los Angeles and Long Beach handled directly — we are 8 miles from the ports. Received, counted, FNSKU-verified, and live in your Amazon inventory within 24 hours.
The moment a customer buys on Amazon, the FBM order lands in our WMS instantly via direct Seller Central API. No CSV exports, no batch delays, no oversells between Amazon and your other channels. Multi-channel orders from Shopify, TikTok Shop, Walmart, and wholesale draw from the same shared inventory pool.
Scan-verified picking with 99.8% accuracy across Amazon SKUs and variants. Standard Amazon-compliant packing, plus branded inserts, samples, and unboxing materials applied per spec on every FBM order. Tamper-evident packing for higher-value items.
Multi-carrier rate shopping at label creation across UPS, USPS, FedEx, DHL, OnTrac, and LSO — selecting the lowest total cost including all surcharges. Amazon Buy Shipping API supported for Seller Fulfilled Prime eligibility. Valid tracking pushes to Amazon within minutes of label creation, every time.
Your valid tracking rate, on-time shipment rate, order defect rate, and pre-fulfillment cancel rate all monitored at the operational level. Performance reports surface SKU-level fulfillment cost, return rate, and carrier performance — so you can optimize Amazon listings, FBA replenishment cadence, and shipping spend over time.
Built specifically for the Amazon Seller Central integration, FBA prep precision, Seller Fulfilled Prime requirements, and multi-channel inventory pooling that growing Amazon sellers actually need — from the same Los Angeles 3PL handling DTC, TikTok Shop, and Walmart from one inventory.
🏷️
Run FBM and FBA from the same shared inventory pool at our LA facility. Sell on Amazon as FBM when you want margin and brand control. Send to FBA when you want Prime badge speed. We handle both from one connection — including FBA prep, shipment plan creation, FNSKU labeling, and Amazon Partnered Carrier inbound shipping.
📦
FBA Prep with Zero Rejections
24-48 hour FBA prep turnaround from inbound receipt with zero fulfillment center rejection rate on prepped shipments. FNSKU labeling scan-verified against shipment plan. Poly bagging with suffocation warnings, bubble wrap, set creation labels, "sold as set" stickers, expiration date labeling, fragile labels, and box-level content labels — all executed per Amazon's current Prep Requirements Guide.
⚡
Orders placed on Amazon before 2 PM Pacific Standard Time ship the same business day, every business day. Orders after the cutoff ship next morning. Valid tracking number uploaded to Amazon Seller Central within minutes of label creation — protecting your valid tracking rate, on-time shipment rate, and order defect rate.
🔄
Amazon Buy Shipping API supported for Seller Fulfilled Prime eligibility. 2-day delivery to 96% of the United States from our LA facility via ground shipping. Multi-carrier rate shopping protects your margins while meeting Amazon's Prime delivery standards. Hold the Prime badge without sending inventory to FBA storage.
📊
Direct Amazon Seller Central API connection pushes inventory updates, order confirmations, and valid tracking numbers in real time. No CSV uploads, no manual reconciliation, no middleware sync failures dropping orders or duplicating shipments. Live SKU-level visibility into FBM, FBA inbound, FBA on-hand, and your total combined inventory from one dashboard.
🌐
Whether you are launching on Amazon with 200 orders a month or running a mature Amazon seller account at 200,000+ orders a month, the same operations team and infrastructure scales with you. Surge capacity for Prime Day, Black Friday, Cyber Monday, and holiday peak — without your valid tracking rate or on-time shipment rate dropping.
Whether you're a fast-growing private label seller, an Amazon-first brand running FBM and FBA hybrid, or an international seller entering the US Amazon marketplace — our infrastructure scales from 200 orders a month to 200,000 without ever needing to switch 3PLs.
Amazon private label sellers running their own listings who need a 3PL that handles FBA prep precision plus FBM same-day shipping — protecting both Prime badge eligibility and Buy Box performance from one Los Angeles facility.
Amazon sellers running both FBM and FBA inventory who need one shared pool, one connection to Seller Central, and one operations team — instead of split inventory across three locations and constant overselling between Amazon and other channels.
Amazon sellers maintaining or pursuing Seller Fulfilled Prime status who need Buy Shipping API support, 2-day delivery capability, and the operational reliability to maintain Prime metric thresholds (98%+ on-time shipment rate, 99%+ valid tracking rate).
Amazon sellers also operating on Shopify, TikTok Shop, Walmart, or wholesale who need one unified inventory pool across every channel — not separate fulfillment accounts and a daily oversell crisis when the same unit sells on Amazon and Shopify simultaneously.
Overseas brands launching on Amazon US who need American warehousing 8 miles from the Port of LA, container drayage handled directly, 2-day domestic delivery coverage, and a single 3PL that can also handle Shopify DTC, Walmart, and TikTok Shop from the same Amazon inventory.
Beauty, supplement, food, baby, and toy brands selling on Amazon who need FDA-registered facility handling, MoCRA-compliant lot tracking, CPSIA-compliant labeling, or CPSC handling alongside Amazon prep — all under one roof at one LA facility.
An Amazon 3PL (third-party logistics provider) is a company that stores your inventory, picks and packs your customer orders, and ships them — fully integrated with Amazon Seller Central via direct API connection. When a customer buys on Amazon as FBM (Fulfilled by Merchant), your 3PL receives the order automatically through real-time API sync, picks the items using scan-verified workflows, packs them to Amazon's shipping standards, generates the shipping label, and dispatches the package same-day. Valid tracking uploads to Amazon Seller Central within minutes. The customer receives the shipment within 1-2 days for West Coast addresses and 2-3 days for nationwide ground delivery.
3PLCity is one of those partners — built specifically for Amazon sellers running FBM, FBA hybrid, Seller Fulfilled Prime, or Multi-Channel Fulfillment strategies. Direct Amazon Seller Central API integration, 24-48 hour FBA prep turnaround with zero FC rejection rate, same-day FBM shipping for orders before 2 PM PST, and 96% of the United States reachable in 2 business days from our Los Angeles warehouse 8 miles from the Port of LA. No middleware platforms, no developer setup, no monthly software fees on top of fulfillment cost.
Most Amazon sellers start with FBA — Amazon stores the inventory, picks and packs every order, and the Prime badge drives Buy Box wins. It works until it doesn't. FBA fees keep climbing (storage, fulfillment, long-term storage, removal, returns), Q4 storage limits force inventory cuts during peak season, and Amazon's strict prep requirements catch sellers with hidden chargebacks. At the same time, FBM-only is slower without operational support — and gives up the Prime badge entirely. The right time to move to a hybrid FBM + FBA strategy with a real 3PL is when you have: enough Amazon volume that FBA fees feel disproportionate to value received; inventory that fits awkwardly into FBA storage tiers (slow movers, oversized items, low-margin SKUs); seasonal products where FBA's storage fees punish off-season inventory; multi-channel operations where one inventory pool across Amazon, Shopify, TikTok Shop, and Walmart would eliminate oversells; or restrictive product categories (supplements, beauty, baby) where FBA prep mistakes cost real money.
3PLCity supports Amazon sellers from 200 orders a month all the way to 200,000+ orders a month with the same operations team and infrastructure.
We connect through direct Amazon Seller Central API integration — not through middleware platforms like ShipStation or ShipHero that charge $50-300/month and add a layer of integration failure between Amazon and your warehouse. Setup typically takes 30 minutes. Once connected, all FBM orders, FBA shipment plans, inventory levels, and valid tracking numbers sync in real time.
Yes. We run FBM and FBA prep from one shared inventory pool at our Los Angeles facility. Sell units as FBM when you want margin and brand control. Send units to FBA when you want Prime badge speed. We handle FBA prep with 24-48 hour turnaround and zero FC rejection rate — including FNSKU labeling, poly bagging with suffocation warnings, set creation, expiration labeling, and Amazon Partnered Carrier inbound shipping. All from one connection, one inventory, one ops team.
Orders received by 2 PM Pacific Standard Time ship the same business day. Orders after 2 PM ship the following business morning. We maintain 99.8% scan-verified pick accuracy across millions of shipped Amazon orders. Valid tracking number uploads to Amazon Seller Central within minutes of label creation — protecting your valid tracking rate, on-time shipment rate, and order defect rate. From our Los Angeles facility, 96% of the US receives delivery within 2 business days via ground.
Yes. We support Amazon Buy Shipping API for Seller Fulfilled Prime (SFP) eligibility. From our Los Angeles facility, 2-day delivery coverage reaches 96% of the United States via ground shipping. Combined with our 99.8% pick accuracy, same-day ship cutoff at 2 PM PST, and valid tracking upload within minutes, the operational standards required to maintain SFP status are baked into our standard workflow — not premium add-on services.
