Every store near me is different, but I've never been to one where there weren't at least two other shoppers besides myself. The ones in easier locations typically have 5-10 people, and larger ones near newer strip malls (with more going on commercially) have a few more than that.
On weekends the numbers at the busier stores go way up.
Other things you can buy online: Plates. Lawnmowers. Slipcovers. Golf clubs. Pizza. Perfume. Socks. Slice it any way you like; people like going to stores.