I have an ProYo Roadster in an unopened package, that I would like to post in the Sale/Trade forum, but I have no idea what it is worth or how to find out or if anyone is interested.
I suppose the best case is for you to just tell them to offer. But I guess there is the situation where you don’t know if you’re getting ripped off or not…
Shucks, I was no help at all 
Unfortunately I don’t think they are worth that much. If you want you can contact Hans V from yoyo factory. After all his dad owned Playmaxx before Duncan bought em out.
If I were you I’d just throw it up on the b/s/t and tell eveyone you don’t know what it’s worth. I tried to find info on it. I got the history of the yoyo but nothing related to its price.