As much of a pain as it is to keep this spreadsheet up to date, it is really interesting to see my spending habits and which months I was a terrible person during, haha. I have everything arranged by date of purchase broken down by series and the purchase dates are color coded by year, so it's painfully obvious when I go on buying sprees. I have a column for actual cost as well as shipping, and oh man, does shipping add up. I also keep track of the seller I purchased each cel/sketch from. I do a yearly summary too and pin point which were the main pieces I bought per month, what was my total spend per month and what was my monthly average spend. It's kind of ridiculous...but I like organization, and color coding is fun XD
Other than Excel, I've found that the Rubberslug Private Info feature is really useful, but the date sections etc have been a bit buggy for me lately so I prefer to keep everything in my own log instead

So how about everyone else? Do you keep meticulous records, or do you prefer not to know
