how much do one of those tablet things cost?
The one he has is Wacom cintiq 12wx and it's 1K+ depends where you get it. hope that help.
if you want the bigger size then the one you see Ben has, they can get over 2K, but smallest which is 12wx is around 1-1.2K if you want a new one. though if you gets used one like from ebay or something it can be like $600-700 I think