How expensive does something have to be before it's no longer cheap. I've only played the Links of North Dakota a couple times, but it hasn't been crowded, and I think it's a terrific golf course. Current greens fees are around $70 (cheaper if you're driving through and get the triple pass, I'm pretty sure).
Also, part of the equation it would seem are additional costs of getting there. It may be great and empty, and the fees may be cheap, but that's only really relevant if you're one of the 30,000 or so people (and that's being generous) who live relatively close. My cousins are an hour and a half away, and even if you live that close, you're adding an extra $25 or $30 in gas alone.