Flagging HSA/FSA eligibility on 31 products nobody could filter for

A large share of this category's shoppers are spending pre-tax money with a deadline attached — an HSA card, or an FSA balance that expires in December. They shop differently: they filter for eligible products, they buy in bulk near the end of the year, and they are far less price-sensitive than a shopper spending their own post-tax cash.

The brand was invisible to all of them. Thirty-one of its forty-four products qualified, none were flagged in the catalog data, and the listings never mentioned it. The team knew eligibility existed and assumed it was a payment detail handled at checkout rather than a discovery attribute that decides whether the product appears at all.

This was a catalog-data problem wearing a marketing costume.

• Eligibility audit — every ASIN checked against the category's qualification rules, with documentation kept for the ones that needed substantiation.
• Product classification corrected, so the eligibility check Amazon runs on the catalog recognizes the products and they show up in the FSA/HSA-eligible store rather than only in open search.
• Stated on the page too — eligibility called out in the bullets and image stack, because a shopper with a card is looking for permission to spend it here.
• Year-end campaign — budget concentrated into November and December, when expiring balances create a hard deadline no discount can match.

Revenue grew 93% to $297k a month: sessions up 18% from a discovery surface the brand had never appeared on, conversion up 36%, and order value up 20% on top.

The order-value rise is the tell: a shopper clearing an expiring balance often buys two products instead of one, and does not compare prices the way a cash buyer does. None of this required a new product, a lower price or a bigger ad budget — thirty-one attribute fields had simply never been completed.