I've currently stopped punting, my last one occurring two months ago (thanks to being fucked about and told bullshit by Naughty Slut Soph over a period of several weeks), and it has enabled me to think the financial cost of this hobby.
I work in a normal 9 to 5 job where I earn a monthly salary. In order to punt, I need to book leave from work to free up time. I am not going to disclose my salary on a forum, however it is of the amount where I can only afford to punt about 2 to 3 times a month (in April this year I did 4 punts which is excessive by my financial standards).
The reasons for this are that I prefer to undertake PSE punts with A-Levels, which are in general more expensive than straightforward GFE punts. On some occasions, I've paid extra for A-Levels. On top of this, I prefer to travel to different cities for my punts by public transport (train and on some occasions tube, taxi or bus), which incurs further cost. For the furthest city I traveled for a punt (Newcastle), I paid £99 return. Also I take my Tibetan Herbal Supplement, which costs £30 for the 6 capsule pack. Plus I spend money on Adultwork private galleries. Therefore for me, punting can be a very expensive hobby.
On reflection, I do wish that I didn't punt as frequently as I did this year as I could saved a considerable amount of money and spent it on other things. However when I go through a great run of punts and as a consequence have the mood and enthusiasm for punting, then I tend not to think too much about the financial implications. A poor run of punts though, then I do think about how much money I have wasted.
I suppose what I should do, if I ever return to doing this hobby, is punt more sensibly by doing more research and finding good value in my home region, plus do this less frequently to ensure I still have money to spare.