I built mine very cheap I think Im in mine for about 60 I bought 4 pieces of 10 foot length 3/4 conduit I had the bender and I also bought the connectors for like 10 bucks the bottom piece is some stuff I scrounged up at a junkyard.
here is mine


these were pieces of flat steel for the stanchions
installed

with lights


all lit up

built one for a friend .. came out a little cheaper on this one cause I couldnt find the same stuff for the bottom


a 33" spare installed


holding 200 lbs

sooo other than pictured it can also hold a nice 12 foot chunk of lumber...
many other things as well