A seller came to us after losing $4,200 in a single month \u2014 not from bad inventory decisions, but from unplanned prep fees at Amazon’s fulfillment centers. His previous 3PL was missing poly bag requirements on a grocery-adjacent product. Amazon caught it at the dock. At $0.52 per unit in unplanned prep fees across 8,000 units, the math was brutal. He didn’t have a bad product. He had the wrong prep center.<\/p>\n
Choosing a prep center isn’t a vendor decision. It’s an operational decision. And most sellers don’t treat it that way until something goes wrong. This checklist exists so you can evaluate your options the right way \u2014 before a $4,000 mistake makes it obvious.<\/p>\n
Start here. Not every prep center does everything. Some specialize in media. Some won’t touch grocery. Some don’t have the equipment to do bubble wrap or poly bag sealing at scale, so they outsource it or do it slowly by hand \u2014 and that cost lands on you.<\/p>\n
Ask for a written service list, not a general “yes we do FBA prep.” You want specifics:<\/p>\n
If you’re sourcing private label, you need a center that can handle all of the above without outsourcing steps. If you’re doing retail or online arbitrage, you may only need labeling and inspection \u2014 but you still need to know that up front.<\/p>\n
Our FBA prep services<\/a> page lists exactly what we handle, including category-specific requirements. That kind of transparency is table stakes. If a prep center can’t give you a clear service list, keep looking.<\/p>\n Pricing is where sellers get burned most often. Not because prep centers are dishonest, but because most pricing structures have conditional line items that don’t show up until the invoice arrives.<\/p>\n Typical per-unit prep pricing runs $0.50 to $1.75 depending on complexity. Poly bagging a standard item might be $0.25. Add a suffocation warning label and it bumps. Add a bundle and you’re looking at $0.75 to $1.25 per unit all-in. That’s before receiving fees, storage fees, or outbound freight.<\/p>\n Ask specifically about:<\/p>\n Review our Amazon prep center pricing breakdown<\/a> to see what a transparent rate card actually looks like. Use that as a benchmark when you’re comparing quotes from other centers.<\/p>\n One more thing: always ask whether they charge for Amazon’s FBA shipment creation steps \u2014 like generating FNSKU labels or building shipments in Seller Central. Some centers include it. Some bill it separately at $10\u2013$25 per shipment plan.<\/p>\n Every warehouse makes mistakes. Mislabeled units, wrong quantities, missed prep steps. The question isn’t whether it happens \u2014 it’s what happens next.<\/p>\n According to Amazon’s FBA policies, sellers are responsible for ensuring products meet prep and labeling requirements before shipment to fulfillment centers. That means if your prep center sends in items with the wrong FNSKU, Amazon may sticker over it at $0.55 per unit \u2014 or reject the shipment entirely. The prep center made the error. You paid for it.<\/p>\n Ask these specific questions:<\/p>\n That last question separates serious operations from ones that will leave you disputing invoices for six months. A prep center worth keeping will have a clear policy \u2014 either they cover verified errors or they apply a credit. Vague answers here are a red flag.<\/p>\n We see this weekly at our warehouse: sellers who switched to us specifically because their previous prep center had no QC step after labeling. Not a photo check. Not a count verification. Units went out the door unchecked. That’s how 8,000 units end up with the wrong FNSKU on them.<\/p>\n Turnaround time matters more depending on your model. If you’re doing wholesale or private label with stable inventory, a 5\u20137 business day turnaround might be fine. If you’re doing OA or RA with time-sensitive pricing windows, waiting 10 days is money left on the table.<\/p>\n Ask for their standard and peak-season turnaround commitments in writing. “We’re usually fast” is not a service level agreement.<\/p>\n Things that slow down prep centers that they won’t always volunteer:<\/p>\n Also ask: what’s their receiving hours? Do they accept LTL freight? Can they receive pallets without an appointment? For sellers getting direct factory shipments, this matters a lot.<\/p>\n Amazon updates prep requirements. Categories get added to the restricted list. Bubble wrap requirements change. New product types require specific label placements. A prep center that last reviewed Amazon’s guidelines in 2022 is a liability.<\/p>\n As of the most recent Amazon FBA guidelines, products in certain categories \u2014 including topicals, grocery, and fragile items \u2014 have specific prep types assigned in Seller Central that must be followed exactly. If your prep center isn’t checking the prep type assigned to each ASIN before prepping it, they’re guessing. And guessing costs money.<\/p>\n Ask them:<\/p>\n Category experience matters. A prep center that’s done 50,000 units of supplements has a very different operational reality than one that’s primarily handled books and media. Don’t assume prep is prep.<\/p>\n Honestly, most sellers shouldn’t prep grocery items themselves \u2014 the poly bag, suffocation warning, and temperature-sensitivity requirements alone are enough to trip up even experienced operations. That’s a category where getting it wrong at the prep stage ripples into removal orders and lost sales rank.<\/p>\n This one sounds soft. It isn’t.<\/p>\n We’ve had sellers transfer inventory to us mid-month because their previous prep center was unreachable for 48 hours when a shipment had a problem. No portal access. No real-time inventory count. Email responses taking 3 days. That’s not a communication preference \u2014 that’s an operational risk when your inventory is sitting in someone else’s warehouse.<\/p>\n Before committing, find out:<\/p>\n And ask to see the portal before you sign anything. A lot of prep centers claim they have “software” that turns out to be a shared Google Sheet updated once a week. That may work for some sellers. For anyone running more than a few hundred units a month, it’s not enough.<\/p>\n Pull this out every time you’re evaluating how to choose an FBA prep center checklist-style. These are the ten non-negotiables \u2014 the things that, if you can’t confirm them, you move on.<\/p>\n If a prep center clears all ten, it’s worth a test shipment. Start with 200\u2013300 units. Check the invoice against the quote. Check the turnaround against what they promised. Check Seller Central for any unplanned prep fees after the shipment arrives. That’s your real audit.<\/p>\n Knowing how to choose an FBA prep center by using a structured checklist like this removes the guesswork. You’re not picking based on whoever has the nicest website or the lowest quoted rate. You’re evaluating an operation that will handle your inventory and your Amazon account’s health.<\/p>\n Most sellers who use this approach end up narrowing to two or three real candidates. From there, the test shipment decides it.<\/p>\n A missing poly bag costs $0.04. Amazon’s unplanned prep fee for the same unit is $0.52. Across 5,000 units, that’s $2,400 you could have kept. The right prep center isn’t an overhead expense \u2014 it’s what keeps those costs off your P&L.<\/p>\n If you’re working through this how to choose an FBA prep center checklist and want to see what a well-run operation looks like from the inside, 365PrepCenter handles all ten points above. We’re in Lebanon, Ohio \u2014 central location, competitive rates, and a rate card that says what it means. Get a free quote<\/a> and see how we stack up against what you’re paying now.<\/p>\n","protected":false},"excerpt":{"rendered":" How to Choose an FBA Prep Center: 10-Point Checklist for Amazon Sellers A seller came to us after losing $4,200 in a single month \u2014 not from bad inventory decisions, but from unplanned prep fees at Amazon’s fulfillment centers. His previous 3PL was missing poly bag requirements on a grocery-adjacent product. Amazon caught it at … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":237,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-238","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-en"],"_links":{"self":[{"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/posts\/238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/comments?post=238"}],"version-history":[{"count":0,"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/posts\/238\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/media\/237"}],"wp:attachment":[{"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/media?parent=238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/categories?post=238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/365prepcenter.com\/blog\/wp-json\/wp\/v2\/tags?post=238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}How Does Pricing Actually Work \u2014 and What Triggers Extra Fees?<\/h2>\n
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What’s Their Error Rate and How Do They Handle Mistakes?<\/h2>\n
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How Fast Can They Turn Inventory Around?<\/h2>\n
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Are They Familiar With Amazon’s Current Prep Requirements \u2014 Not Last Year’s?<\/h2>\n
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What Does Their Communication and Client Access Look Like?<\/h2>\n
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The 10-Point Checklist: What to Verify Before You Sign On<\/h2>\n
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