Folks.
I just dared check the total spend on my Steam account, and, erm, it's not pretty.
A total of $17411.04!
BLIMEY.
In my defence, I've had the account for 20 years, so that's about $870 per year.
Still. Please don't tell my wife. I've had her for twenty years also, but I don't think I've even spent half as much on her.
Here's how to do it: https://www.eurogamer.net/steam-has-a-buried-page-that-totals-all-your-spending-if-you-dare-to-look