I'm giving an estimate on spreading some blue stone under an already constructed 800 sq. ft deck. I estimate I'll need approximately 5 yards or so of blue stone to spread it at and inch or so. It costs $35.00 a yard plus a $50 delivery so we're looking at $225 without tax. I don't really know what to charge for the labor at all. I've done it before when working construction, but I have no clue what to charge especially since we'll have to be under a 3 and a half foot deck the whole time.