I haven't been playing very long but it seems to me that the price of clubs (buying with credits) is astronomical. 1500 credits for a driver? Wow. Guess I have a lot more playing to do with my rentals "expiring" and having to go through my equipment to get another set.
Yes - it can get pricey. Wait until you see the 4495 drivers!!!
Anyway, plan ahead for club "purchases" and use them sparingly. I use the Pro Shop Tables put together by user "ScottHope" to see what is out there in the Pro Shop and what I can get when, and what attributes every club and ball has. You can sort them (it's a database) and specify what you are looking for in terms of attributes (including price!).
You can click here to see the tables, but I highly recommend going to his profile page to see all the other goodies he has there!!
Edit - I just realized I responded to a post about 10 months old!! Oh well, maybe it will help someone else!