I'm planning on listing my walking letters on ebay. We've had them since they were new in the 70's. The box is in horrible shape with some old duct tape holding parts together but it is the original box. We just don't have any use for them and they are just sitting in the attic collecting dust. So I was wondering how much should I ask for them? They have stayed in one family all these years and only 3 children played with them (I think the box might have been played with more lol). The ramp and keys are in great shape considering the age. I can't find any to compare price to.