Hey there, GuineaGang! Want to know how much a guinea pig really costs? In addition to the upfront price of adopting the guinea pig(s), there are a few more items to consider. Food, cages, vet bills, toys, liners, and grooming supplies can all add up, so make a list, plan and budget, and you and your future piggy family members will all be much happier. All-in-all, the majority of guinea pig owners report spending about $1500-$2000 for two guinea pigs in the first year, and about $1,000 each yea