From working the in large scale construction industry stone is about as precious as gold here in this area... It's typically double the cost of the Raleigh or Charlotte areas...
If some contractors you know can get ABC stone for 14.00 a ton delivered that's absoultely amazing... I just checked w/ one of our estimators and in our area figure 16.00 - 18.00 /ton for material or around 22.00 delivered.... So I'd say the $400.00 price tag is right on for "our" area... Again it's typically much cheaper in Raleigh/Charlotte...(more competition)
EDIT:
Also figure...
15 tons for a dual Axle
18 tons for a tandem axle
20 tons for a quad axle
