I am about to pull my hair out finding shells for the brevis I ordered.

None of my local grocery stores sell escargot, none of my
LFS's sell Neothauma Tanganicensis shells, I can't find any decent shells at the craft stores around here, I swear there is not a French restaurant to call within 50 miles of here (I live in redneckville), the few places I have found that advertise them online either don't have them in stock, or won't return my e-mails to let me know if they have them........AGGHH. The fish will be here in two days and I don't have any homes for them. Any ideas? Does anyone have a good source for the Neothauma shells online? I have a few sea shells here at home that MIGHT work, but I think they are going to be too big.....
I guess I could go with hermit crab shells.........IF I could find any that weren't painted without stupid designs (the only type the stores around here seem to sell.