I can see someone bidding that amount for a kit, if it was of particular interest to the winning bidder. Of course it would simultaneously have to be very interesting to another bidder for the bid to get so high. Back about 10 years ago I had been looking for some number of years for a battery powered Halibut submarine model. In the early 60s I had one. I always looked back fondly on those memories playing with that sub. To make the long story short, one happened on *Bay. I ended up getting the NIB kit for nearly $600. Was it worth it? The kit, no. The building and playing with that early 60s model, yes.