I have a subscription there and I paid the fifteen bucks for the Collins list (Football only, as opposed to the Meiselman lists that cover all sports). Between the two, there are very few addresses that I can't find. Plus, the people on that site are incredibly helpful and more than willing to share information.
On top of that, there are a number of guys there that do private signings (like the Rice one that I was able to take advantage of). I've only been a member for a short period of time, roughly two months, but, in taking on the 1989 Score set, I've found it to be more than worth the price of admission.