Large cage doesn’t mean more expensive!
Here are cheap cages that are large enough for guinea pigs, and cheaper than pet store cages! See “What’s so bad about pet store cages?“
Recommended guinea pig cages
7.83 square feet – minimum for 1*-2 guinea pigs
Amazon Basics Small Animal Habitat
7.65 square feet – minimum for 1*-2 guinea pigs
2×3 GuineaPigCagesStore C&C cage
8.15 square feet – suitable for 1*-2 guinea pigs
Note: a grid is 14″, NOT 12″
2×4 GuineaPigCagesStore C&C cage
10.87 square feet – preferred for 1*-2 guinea pigs
Note: a grid is 14″, NOT 12″
Generic: DIY C&C Cages
You can create any of the above or any shape/size you want by DIY-ing it yourself.
A 4 cube storage grid set includes 16 grids. That is enough for a 2×4 cage + 4 extra grids.
Note: a grid is 14″, NOT 12″

Let’s discover more about guinea pigs: