An Amazon FBA business for sale usually shows healthy revenue and a clean profit figure, but the real risks sit underneath: the Amazon account itself, the supply chain, and the product's position in a market Amazon controls. A buyer who checks only the profit and loss statement is buying blind. These are the red flags that matter most.

The first red flag is account health. Ask to see the Amazon Seller Central account health dashboard, including policy warnings, listing suspensions, and any past account suspensions. A single unresolved policy violation can lead to a suspension after you take over, and a suspended account earns nothing. If the seller will not share account health screenshots or a live screen share, walk away.

Review patterns are the second warning sign. Look at the review history for sudden spikes, a high share of five-star reviews in a short period, or reviews that read like they were written from a template. Review manipulation can trigger Amazon enforcement and wipe out a listing overnight. Also check the share of reviews that mention product problems. A product with a growing pile of one-star reviews about quality is a product whose best days are behind it.

Supplier dependence is a quiet killer. If the business relies on one factory in one country with no backup, a price rise, a shipping delay, or a factory closure can stop the business cold. Ask who the supplier is, whether there is a written agreement, what the lead times really are, and whether the seller has ever had a shipment rejected for quality. A good FBA business has at least a second supplier identified, even if it is not yet in use.

Watch for revenue concentration. A business with one hero product earning most of the profit is riskier than a business with five steady products. One competitor, one copycat, or one Amazon policy change can take the hero product down. Check the revenue split across products and ask what happens if the top product disappears for a month.

Inventory is another place where deals hide problems. Verify the stock levels in Amazon's warehouses against the seller's claims, and check how many months of stock you are buying. Too much slow-moving stock is dead money, and too little means you will run out before your first reorder arrives. Ask about storage fees and the age of the oldest inventory.

Finally, check whether the brand is actually protected. A registered trademark and Brand Registry enrolment matter, because without them you cannot stop copycats or control the listing properly. Confirm the trademark transfers with the sale and that the seller is the legal owner. A business without brand protection is a business anyone can copy.

Amazon fees take a large share of every sale, and they change often. Ask the seller for a breakdown of the referral fee, the fulfilment fee, storage fees, and advertising costs for each product, and work out the true margin yourself. A product that looks profitable at a glance can be barely breaking even once the fees are counted. Check whether the seller's advertising spend is sustainable, because a business that needs heavy ad spend to sell is a different business from one that sells organically.

Ask about pending legal or trademark disputes before you sign anything. A product that infringes another brand's trademark, a listing under a patent complaint, or a pending Amazon policy investigation can all turn into a suspension after you take over. Search the brand name and the product type for complaints, and ask the seller directly whether any disputes exist. A seller who hesitates or gives a vague answer is telling you something. Get the answer in writing as part of the sale agreement.

Any one of these flags does not have to kill the deal, but each one should lower the price or change the terms. Two or three together should make you pause. The best FBA acquisitions are boring: a clean account, a real brand, several products, and a supplier who answers the phone.