Greg, Besides the $250, you do have to fill out a form and submit it too, and keep the responses within the lines!
We did join up one year and thoroughly enjoyed the rater retreat based out of Biloxi! Did we get our cash money's worth out of it? Close, if not, as very rarely asked to be comp'd, as never really plan much golf in advance as set out in "the rules".. Interaction with the leader and others, and being exposed to the process, experience, and challenged to think about all the factors involved was, however, worth the cost and all... once.
One needs to be able to think and compare what is being presented to one's own benchmarks. The more diversity probably the better the ratings are, but after you play a course once, you know whether you'd want to play it again and whether to recommend it to a friend,.. its the condensed take-away opinion that's important. Not quite comfortable with making that a number.
Pay your money, ya take your chances...