Re: Anyone here buy there Guinea Pig from a pet store?
[I posted the below before realizing that you had already bought your GPs from a store anyway, so this response (and your original post) is pointless realy .. but here it is nonetheless.]
I bought our first GP from PetSmart. I knew *nothing* about them. I truly did just about everything wrong, and really so did they, from selling us a tiny cage (perhaps 1.5 sq. feet) to getting the sex wrong (it turned out to be a female despite PetSmart policy of selling onle males) to telling us the GPs don't need to see the VET!
Luckily, the GP was healthy. We've had her about 3-4 months now and she is doing great. So health wasn't an issue for us, however, as I did more research (starting with CavyCages!) it became obvious that the pet store route wasn't a good choice. I learned *so* much from this site and others and I eventually built a two-level c&c cage for her, got her to the vet, on a good diet, etc. And importanly, I decided to get her a companion. This time, however, I looked into adoptions. I was suprised by how many rescue agencies are around and that even the local SPCA, humane society had GPs for adoption. There are so many GPs out there that need a good home that it just didn't make sense to support the pet stores and the breeders that contribute to the problem of unwanted GPs.
I would encourage you to find a way to adopt. Even if your local shelter doesn't have any GPs available TODAY be willing to wait a few weeks. You'll feel better for it and it will give you time to do your research, learn more about these fascinating animals, and build a good (big) habitat for them!