Hello and welcome, lovely to have you join us
You'll learn everything you need to know here!
The gabber rex only pops up occasionally on ebay as its not availible brand new anymore, but keep your eye out
There are similar alternatives to the gabber rex (hagen zoozone 1 or 2 or the duna multy)
If you have a look through the cage review section you should find a bit about lots of different cages
If i'm right the hagen living world exercise dome has a big door on top and personally i like the look of it a lot. Although you may have to plasticote the shelves to make it waterproof, otherwise they'll get mucky
The leon is also very good, but again the levels will need plasticoting!
Please feel free to ask any questions you have and we're happy to help x