I almost never keep track of my cel buying.  I 
have a set limit to what I can spend each month, 
but that's about it.  I think Id be too ashamed 
of myself if I kept records of my cels' costs...  
I do have totals for what my collection is worth 
though. I remember what I paid for every cel I 
have just about....but..other than that, no 
recording here.