I had this same problem. I printed a bunch of stuff out about how more space = happy guinea pigs. I gave my mom and my dad copies of what I printed out. Then I measured and taped a part on the floor whare the cage would go. I wrote down a list of things I needed to buy, where to get them, and how much they cost. I made a list of the pros and cons (none) of C&C cages. I also made a list of things that I would to around the house if I got a c&c cage (I like making lists

)