I think the price range you listed in your poll is a little high. I'm not sure how much the "limited edition" is selling for these days, but $70 sounds a little high.
In terms of intrinsic value, based on the comments that I've read from those who purchased it, I'm not sure if Civ III LE has much.
The short answer would be that I'd be willing to pay $44 for it if I were to buy it today. After all, that appears to be its current monetary value, just as $50 was its value when I bought it back in early November.