Wow, I'm over the moon! I've just bought the ferplast mary for £70 from p@h and it is amazing and huge. I've bought plenty of accessories for it too- I bought 15! It was fairly easy to assemble, and it came with a shelf too. I'm just about to put all the toys in now. I'm so happy!
I can't post pictures yet as I haven't got my new camera yet, but I will be getting it soon.
I'd also like to say a big thank you to all you guys for helping me find the perfect cage. I'm so grateful for all your help!