I sold an NOS set of plastics about 2 years ago and it was missing a couple of plastics and I got around 150 for it. I have a windcoaster NOS ramp and I think the ramp should be worth between 300 and 400 based on the rarity. The decals can be had from Marco etc....I tried to sell an NOS boat plastic for 40 or 50 and had no takers so hard to say what it's worth.