I got a bargain cage of 5 euros from King's Day Market, yesterday. Gave my little ones a bit of an upgrade. They are mildly confused about the sudden space they have. Also, in case I separate them, they both will have a decent cage. I added a ferplast tube opening to the door at the back. The size didn't quite fit, so I had to use tape to make it stick. Luckily my two girls are not chewers, so I do not have to be worried about them chewing the tape. I also got a silent spinner, it came with the 5 euro cage. Very happy!
Here's the picture