Guinea pigs are usually for sale at any pet retailer that handles live animals, including PetSmart, Petco and many locally-owned pet stores. Prospective pet owners may also find private parties in their area with guinea pigs for sale by browsing classified listings, such as Craigslist and Pet-Classifieds.com.
Guinea pigs sold by pet retailers typically include a guarantee to give new owners peace of mind after their purchase. PetSmart, for example, raises pets under a veterinarian-approved program and gives a 14-day satisfaction guarantee.
Private guinea pig breeders are often much cheaper than retail sellers, but may not include a warranty and usually do not sell food, cages or accessories. Classifieds are an excellent source for a person who wants a mature guinea pig. These pets are typically tamer, more sociable and often include an assortment of accessories, but older guinea pigs usually cost more than babies.