I had one of those creepers back in the early 70's It was not a good creeper! If you were laying on it and pushed up on a wrench to loosen a big bolt, like say a trans bolt, they would collapse. I nailed it back together countless times....
However........I would buy it in a minute for $20. Then I would search e bay for 60's & 70's vintage stickers like STP, Bardahl, NHRA etc. and any other cool auto sticker. I would put the stickers on it and hang it on the wall!! That would look cool!!
Ok now I have to add creepers to my Craigslist seaches!!