FNSKU vs. UPC Labels: The Complete Amazon Seller Guide A seller sent us 800 units last spring — private label supplement, nice packaging, UPC already printed on the box. She assumed Amazon would scan the UPC and everything would route correctly. It didn’t. Amazon flagged the inventory as unscannable at the fulfillment center, sent her … Read more

FNSKU vs. UPC Labels: The Complete Amazon Seller Guide You send in 500 units. Amazon receives them, scans the barcode, and can’t match them to your listing. Now those units are in a black hole — stranded inventory, a support ticket you’ll spend three weeks on, and possibly a removal order you paid for. This … Read more

FNSKU vs. UPC Labels: The Complete Amazon Seller Guide You send in 500 units. Amazon flags 200 of them for label issues. Now you’re paying $0.15 per unit for Amazon’s labeling service — on top of your FBA fees — because the barcode on the box wasn’t what the system expected. That’s $30 you didn’t … Read more

Amazon & eCommerce Weekly News Roundup — Week 2 A seller called us last Tuesday. She’d just received a stranded inventory notice on 340 units and couldn’t figure out why. Turned out Amazon had updated a listing attribute requirement — quietly, no announcement — and her prep didn’t match the new spec. That’s $1,200 in … Read more

FBA Prep Center vs. Doing It Yourself: Which Makes More Sense in 2026? A seller in Columbus called us last spring after Amazon hit him with $1,847 in unplanned prep fees on a single shipment. He’d been prepping in his garage for two years, thought he had it dialed in. Turned out his poly bags … Read more

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 — 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

Amazon & eCommerce Weekly News Roundup — Week 13 A seller called us last Tuesday. She’d just gotten hit with $1,847 in unplanned prep fees on a 3,500-unit shipment — because roughly 700 units arrived at the FC without poly bags. Each bag costs her about $0.04. Amazon charged $0.52 per unit to bag them. … Read more

Amazon & eCommerce Weekly News Roundup — Week 13 A seller called us Tuesday. She’d just eaten $1,800 in Amazon unplanned prep fees on a 3,000-unit shipment — all because her supplier skipped poly bagging on items that needed it. Four cents a bag at the source. Fifty-two cents a unit at the FC. That’s … Read more

Case Study: How Ohio Amazon Sellers Cut Prep Costs by 40% with a 3PL A seller out of Columbus was spending $3.80 per unit to prep private label supplements in his garage. Poly bagging, labeling, bundling — he was doing it himself on weekends. When we ran the numbers together, his actual cost including his … Read more

Amazon & eCommerce Weekly News Roundup — Week 12 A seller shipped 2,000 units of a seasonal product last week. Referral fee change kicked in three days before delivery. His margin math was off by 2% across the entire shipment. That’s not a rounding error — that’s real money gone before a single customer clicked … Read more