500 is a very low amount of plays for those games, particularly in the case of HS2 which is nearly 20 years old. Because of this, it puts them into rare territory, and they rightfully should command top dollar. This is assuming, of course, that they are in good cosmetic and mechanical condition. Given the low amount of plays, there should be virtually no playfield wear at all. If there is, I'd question how accurate that 500 plays figure is. If I were selling these to a friend, I would probably ask $2,000 for the HS2 and at least $6,500 for the MB.

First of all, I would never pay $10,000 for a HUO MB when I could have a high-end restoration for the same price. I'll admit that I may have been a bit low on the MB price, but I still think $2,000 is an accurate price for the HS2. Bear in mind, the OP stated that he is buying these from a friend. The price I would give to a friend and what I think I could actually get for it on the open market are two completely different things.

Interesting. I was thinking about having Treasure Cove do an MB for me about a year ago. At the time, Allen quoted me $8,500 for a fully restored one with a clearcoated playfield. Now I'm not saying that he does as good of work as Chris or Jim, but it would definitely be considered a high-end restoration. I realize prices have gone up a lot since then, but I figured $10,000 would be about what they go for these days. Apparently, I was wrong.