Hi everyone!

I was wondering what everyone's opinion is on 
having the matching sketches that go with your 
cels.  I never really thought much about it 
either way, until last night.  Someone is selling 
a set of sketches on ebay that goes with a cel I 
purchased from a dealer some time ago, and I just 
felt this need to get the sketches!  
Unfortunately, someone else wants them even more 
than I do and keeps outbidding me!  I can't 
decide if I should keep bidding or not.  

So, what is everyone else's opinion on sketches?