Excellent article snowy, wierd arnt they?! I've yet to experience it with Dudley but as Reggie is older I thought I'd better mention it. Also, check how old the UVB light is, I'm assuming it will come with him and his set up?. They must be changed regularly at least once a year, more with the cheaper ones. One of the best ones is the Arcadia T5 12%, that will last a year but some of the cheaper ones may only last 6 months. They are very important for BDs, so do check it.
Oh, and rfuk is a brilliant forum, a bit like Omlet for reptiles!