Yamaha DTXpress/DTXplorer/DTXtreme

I have never drummed before(-besides enjoying the arcade digital kit 
to Rock'n Me!) and was wondering if $400 for a DTXPRESS(I) kit with a 
pedal is a good deal.  It's used, but barely used and wired by a 
pro.  I see the new ones(III) are around $1000, but I wouldn't want 
to pay that since it'll mostly be a toy to go with my bass for now. 
Thanks for the advice.

Cort