Seeking can pay dividends. Yes, there are a lot of scammers, fakes, photo sellers etc. But I have been on and off there for a few years now and have had some fantastic experiences (as well as a couple of shockers) and it had replaced punting for me.
In terms of costs, the monthly subscription is a complete waste of time at the moment, I'd save the money until its safe to meet. But costs for meetings have ranged from £300 overnight down to nothing. Yes, there are girls who want hundreds (or even thousands) but thats not to much different to punting. If you can't afford it, don't pay it!
I have a decent number of regulars and certainly the connections you get with the girls you meet is far beyond anything you get with an escort. There are pros on there sure, but there are a lot of girls who just want a bit of extra cash, some company, to get to know a man with a bit of disposable income or just the thrill of sex with a stranger / older man.
As many have said on here on other threads, if you put a bit of work in then you will have a great time.