Let me call my local supplier tomorrow and well see what kind of prices I get to compare.
Ill talk to the landscape people and the primary supplier.
The tonnage isn't too far off from my estimate if you go 9 in deep... about 44 tons. Add a 5% error for highs and lows and you start to approach that 50 ton mark.
$40 per ton sounds insane to me. We'll see what I get.
By the way, the company I use is hallett materials, which is now owned by oldcastle materials. Oldcastle is the forth largest aggregate producer in the us, and owns many companies in many states. Perhaps they own an aggregate supplier near you and you'll get better pricing.
http://www.oldcastlematerials.com/divisions.htm
Has contact info.
Again, will post more info tomorrow.