I think I'm at about $6k total over the past 3 years.
It's only the equivalent of about $180 per month, so it's not too difficult for me to squeeze it out of my pocket money.
I'm not a bar regular, don't drink much at all, and don't have much in the way of expensive lifestyle activities.
The above number is a bit over half my monthly pocket money, so it's not too difficult to hide.
On top of a regular income, I do get the odd well-paid contract, which lets me hide some away for the hobby.
This past 5 weeks it got me out 3 times, but that's unusually busy for me.
I'm usually happy with once every 3 - 4 weeks.
I figure as long as I can do it with clear cash, and it's not interfering with living costs, then I won't worry about the total.
..I probably spend about the same on lattes, anyway... (ok, so I do have an expensive lifestyle activity...)