See, that sort of thing is why I hate supermarket self-checkout. Other places it can be fine, but unless I'm doing the old 'ten items or less' thing and it's an off-peak time, there's a big line at the self-checkout. It's a toss-up whether self-checkout or going to one of the two checkout lanes they have open with people on them is faster at this point, which basically means I'm subsidizing the company by doing what an employee could do more efficiently and everything would be a lot faster if they just opened up more human lanes.