Yeah that is a good price just check it has a solid backon it. Some of the cheaper ones have a crappy 5mm conti board back. Not too bad with snakes butpoopfor lizards who have claws!!!
DCL Kitchens in Doncaster will build them but depends on where you are based. The quality is far superior to any you can by in rep shops. and their prices are good... plus you can choose between loads of colours and finishes.
We got our stack built to my designs and it's great, came with the strengthened glass, locks and vents all fitted - Will post some photos when I get chance.
Here's their website if you are close by, they are a kitchen builders but tell them what you want and they can create it:
on the rainbow boa forum, kaz posted something in the herp equipment section about a guy who builds vivs for cheaper than normal. that depends wether ur near rotheram tho!