I think you are probably the only one who can answer that question. If there are some topics on his list that you would like a bit of advice regarding, then the price is probably worth it. I have been a subscriber to LensWork for some time now and there is no doubt that he has a good eye for finely crafted, black and white art.
I think it may even be worth your time if you are currently in a low point and are struggling a bit with how to move through it. If he functions as a bit of a mentor at this point in your career there is certainly no harm in that.
Like I said, you really are the only one who can answer whether or not it will be useful to you. Some people work best on their own, putting their head down and pressing ahead themselves, finding their own way. Others find the occasional advice of a mentor to be a necessary part of their personal development. A lot of this is understanding your own needs and then doing those things that honestly help you personally. Unless we knew you very, very well, I am not sure we can help all that much.
Good luck, whichever route you take, and enjoy the trip.