Fender/door paint rack

[fireguyfire]

I was thinking of buying an auto body paint rack for fenders and doors for when I paint my 73 Challenger but they seem way over priced for what they are.
Has anyone here built their own version of a door/fender rolling paint rack? If so, could you post up a few photos and measurements?

[Rdchallenger]

Old, but following.

[7E-Bodies]

I bought 4 from harbor freight for under $20 each and they've been great

[fireguyfire]

These are the rolling style that hold the door horizontal for painting?