So I've moved away from New England years ago with a perfect 2nd edition New England Bouldering guidebook... I've just been informed that they fetch a decent price on the internet these days. I'm curious what people are actually willing to pay for it?
You could try posting it here on MP for an outlandish price but you will rightly be ridiculed. You could try posting it on Amazon just under the going price for the current books, but it will likely never sell (those prices are inflated by bots automatically raising against each other in an endless cycle). You could post it on ebay and see what the market will bear, but you will lose 10-12% to fees. Also, a quick search shows that several have been listed over the past 2 months at prices ranging between $116-$200, but none of them sold or even got a single bid.
Or you could post it here on MP for a high, but reasonable price (probably around $45) and it will sell within a day or two. A motivated young climber will be use it and love it to death, and you'll get warm fuzzies in your chest knowing you passed on some good karma and still tripled your initial investment with a book that's been languishing unused in your closet for years.