Sale Tags vs. Real Price Drops: How to Read a Shrimp 'Discount'
A sixth of in-stock shrimp listings display a markdown against a compare-at price. Our day-by-day tracking shows how those tags relate to actual repricings — and how differently vendors use them.
Published July 29, 2026 · figures recomputed from data through September 2, 2026 · by Shrimp Price Index
Browse a shrimp store online and you'll see strikethrough prices — "was $6.99," sale badges, percent-off math. As of September 2, 2026, 94 of the 567 in-stock dwarf shrimp listings we track — 17% — display a compare-at price above the asking price. The median advertised markdown is 15%.
But an advertised markdown and a recent price cut are different claims, and because we record every listing's price every day, we can measure the difference. Of those currently sale-tagged listings, only 2 have actually changed price at any point in our 50-day tracking window. The discount display predates our window entirely — the asking price has been the asking price every single day we've looked. A discount that never ends is a price.
This is a pricing style, not a scandal
To be clear about what this does and doesn't mean: keeping a catalog marked down against a higher compare-at price is a common, perfectly legal merchandising approach across e-commerce — and the vendors we track sit at opposite extremes of it:
| Vendor | In-stock shrimp listings | Sale-tagged | Share of catalog |
|---|---|---|---|
| Shrimpy Business | 155 | 90 | 58% |
| Flip Aquatics | 23 | 2 | 9% |
| Teacher's Pet Aquatics NW | 23 | 2 | 9% |
| Coast Gem USA * | 48 | 0 | 0% |
| Superior Shrimp Aquatics * | 215 | 0 | 0% |
| The Shrimp Farm * | 33 | 0 | 0% |
| Tropicflow * | 70 | 0 | 0% |
* The Shrimp Farm's product feed carries no compare-at field at all, so a strikethrough there wouldn't reach our data — a limitation of what we can observe for that store, not a statement about its merchandising.
One vendor's catalog is majority "on sale" as a standing state; most of the others don't use the mechanism at all. Neither approach is wrong — but the same badge carries completely different information depending on where you're shopping.
How to tell a real drop from a standing tag
- Compare against the market, not the compare-at. The compare-at number is chosen by the vendor; the cross-vendor per-shrimp median on our morph pages is computed from what every store actually charges today. "30% off" above the market median is not a deal.
- Check whether the price recently moved. Our price drops page lists only listings we observed getting cheaper between daily snapshots — so far, in this market, that's a very short list indeed (here's how rare repricing is).
- Mind the pack math before the discount math. A tagged 10-pack can still cost more per shrimp than an untagged 25-pack next door — the pack-size curve moves per-animal prices far more than any sale tag does.
The honest caveats
Our window is 50 days old and grows daily — a listing marked down before we started tracking would show as "never moved" to us even though the cut was once real. The measurement sharpens every month the index runs. What already won't change: on any given day, the overwhelming majority of sale tags you see did not appear that week, and the cross-vendor median is the sturdier yardstick for what a fair price is.