Britpick Question

[amberfocus]

Do you have mega warehouse stores like we have here in the states, like Costco and Sam's Club?  If so what do you call them? 

Edited to add:  Basically I need the name of a store where a very large package of condoms could be purchased from.  And I don't mean a twelve pack, I mean a larger bulk pack than that.  Or do they even sell them in larger bulk packs there?

Thanks.