I didn't see it mentioned, but there's sometimes another factor: When a store is selling things for .00 vs. ".99" (or any other fractional amount), I assume it

I didn't see it mentioned, but there's sometimes another factor: When a store is selling things for .00 vs. ".99" (or any other fractional amount), I assume it's a premium-priced store. They sure aren't rounding down to those numbers. (Or, many times when I see .00 numbers, it's slightly upscale clothing stores, who're maybe using .00 to seem more upscale, but who also have near-constant significant "sales". So if I see a .00 without a large "sale" discount, then maybe I'm there the wrong day, or someone hasn't yet been around with the price sticker gun yet that day.) But when they're using fractional numbers, that says they're more likely targeting more pricing-sensitive buyers, and I'm also not paying for the upscale pretense.