Currently on eBay you can buy both a DeLorean ($34,999), and a Back to the Future DeLorean Time Machine Interior Kit ($4000).  More info below from Video Bob at BTTFSTUFF.com.

 
Universal Burn 06/01/2008
 

Reports indicate that the courthouse square and clock tower that enabled time travel sets from Back to the Future have been badly damaged by the fire at Universal Studios.  Horrors!