Please don't buy a guinea pig from a pet store!
https://www.guineapigcages.com/foru...e-breeding-care-housing-disaster-threads.html
When you buy pet store piggies you support the cruel breeding at mills.
My guinea pigs love Oxbow, and its good for them too. Before when I fed Kaytee pellets (before I knew better) they would always leave a lot behind and seemed very disinterested in them. When I began giving them Oxbow they bowl empties so fast, better quality food not only is better for them but apparently is yummier.
Remember that guinea pigs need grass hay 24/7, and 1 cup of vegetables per day. The stickies at the top of the forum are a great place to start when creating a diet plan. Remember to not feed veggies that are high in calcium too frequently.
And....guinea pigs are social creatures and herd animals by nature and need to have a buddy to interact with.
Also, you can find guinea pigs in need of homes on your local craigslist. However, there are breeders that occasionally advertise on the site as well, so you have you be aware of that. But, there are lots of typical "child grew out of it" posts of guinea pigs that are genuinely in need of a proper permanent home. Just keep your eyes open, and be paitent
.
Good luck