Searching for/in shops

[mygirllollipop]

I'm looking for a halterneck tankini by cup size rather than dress size.
Am I missing a really obvious way of looking for shops or in people's shops?
I've looked on auctions and am watching a couple but would like more options.
TIA.

At the left hand side, under search options, check the "More Buying Options" box making sure that the drop down menu says "add shop inventory".

Aha! Thank you!