I have bad news.
I called the number in the above ad, and the lady told me that YES, there is in fact AT LEAST 500 guinea pigs in need of a home. She told me that her husband is the main breeder/supplier of guinea pigs for all PetsMarts and Petcos in central Arkansas. Since he is about to retire, he wants to get rid of his entire herd of piggies. She told me they weren't really up for individual adoption because he wants to sell the "entire operation" all at once, but they are selling a bunch of males and some females at the Beebe, AR flea market this Saturday 9/8. She also said they have all breeds, ranging from texels, Peruvians, Abyssinians, etc. I feel terrible about all these pigs that are being unloaded like inanimate objects. I'm sure they aren't getting the proper care and love they need. I don't even know what to do or how to help this horrible situation! I'm at a total loss!