But if I’m asking, it’s because I already looked on the shelf and I didn’t find the thing after looking for at least five minutes. I want to know, at that point, whether they carry the thing at all; whether it’s just in a crazy place (e.g. honey in the bakery in a little spreads display, instead of in the baking or condiment aisle); or whether my eyes are failing to do their jobs properly and I’ll need to look again.

I can't find it if I'm looking at it. I long to photograph the shelf and then search it with OCR.