It's very easy to run a report and get gross sales. It's not so easy to track profit. My margins are guesstimated from how much cash I have in the bank versus what I had a year ago, but I've made money in other ways so need to exclude that.

On a per product basis it's relatively easy, but the question is what the average is.

My philosophy is that if you know you're making money, it's not so important to track exactly how much. I'll probably need to adjust that when I file my first tax return next year, though (so not looking forward to it.)