Oh good, Im not the only one who doesnt keep 
track of their cel purchases!  I was beginning to 
feel odd here for a moment.  I mean, I just dont 
have the time to make detailed records for my 
cels.  I guess I dont have enough cels though. I 
can look at any one of my cels and know how much 
I spent on it, and where I got it from.  As for 
cels I've sold, I dont care.  If they're gone, 
they're gone.  After I buy/sell a cel I dont 
think much about the transaction itself.  My 
brain is so jam packed with other junk I have to 
remember during the day/week/month/year that my 
mental filing cabinet just disposes of most 
uneeded info pretty quickly. I think it's a good 
idea to keep files about your cels, but only if 
you're on a really tight budget, or you run a 
business, or if you have LOTS of cels.