I keep a spreadsheet (I know, I'm anal) with date, amount, where. It subtracts from my running allowance total. I can't look at it right now but my 3D expenditure was around $1,800 for this year (that's at various places like here and DAZ, etc., a few books, Mojoworld, and some of that was gifts and donations for other people). Too much considering what I have turned out.