I hauled 2 sets of metal shelving from Zanesville last weekend, intending to erect them both in my garage.  After seeing how freaking big and heavy these are, I am going to sell off a set.   
These were used by an Ohio utility company to store spools of electric cable.  In other words, they will hold a lot of weight.  A lot.   
What I have will make a 12ft long by 9ft high by 3.5ft deep unit.  These go together with ~4" bolts, which I probably have enough for you.  You'll need plywood to make the horizontal runners (how thick depends on how much weight you need to hold).   
$50, trade?   
You will need a full size truck.     
And yes, I'll grab a pic or 2.  Thanks.