[Tagging] Proposed tag shop=wholesale

[Andrew MacKinnon]

> What is distinctive is that such places usually have specialist staff
> and stock suitable for professionals (but often in very small businesses
> who would not have the volume to buy from wholesalers), and will run
> business accounts using "trade prices"and credit for them. But they are
> typically also very happy to deal with "normal customers" for whom they
> are just retailers.

A lot of Costco's customers are small businesses who buy wholesale
from Costco and then resell at higher prices, but many individuals
shop as well. So shop=wholesale is probably reasonable.

Is the consensus that Costco and Sam's Club, etc. should just be
tagged shop=supermarket and some other tag (like membership=yes)?