Almost every old car or truck we have now, I gave scrap value or below for them at public auctions.
The fire trucks are a good example. Bought them at way less than scrap value and really enjoy them and the comments we get.
Can I sell them at a big profit, no, will I lose money, no.
Lucky, I have a wife that told me when I got the first fire truck but did not tell her until it was in the driveway. She trusts my judgement!
Like Alvin said, keep it original and you make your money when you buy it.
If you like it and can afford it, do it also.
Don