Do It Yourself (DIY) Not So Cheap After All
Constructed a simple rolling platform but the price in materials was not so simple:
11/16" seven layer plywood 2' X 4' $15.00
4" caster wheels ($12.80 each) $51.20
4" rigid wheels ($5.28 each) $10.66
#14 wood screws $1.11
wood stain (found some in garage)
Total $77.97
H-Dep Stuff/wheels from China, of course.