the rule of thumb for rare CDs on amazon is that the normal auction price is half of what the cheapest listing is.
It's way cheaper than the dude in Japan who wants $910 for that CD LOL
this CD was long lost for many years but a batch suddenly popped up on ebay some years ago which drove the price down. I think I've seen it as low as $30-something but I'd expect it to be a $50-$100 CD these days depending on your luck.