Yes, I'm pulling approximately 32 samples in an 80 acre field.

I'm sampling at a 7" depth and having pHw, pHb, P, K, Ca, OM, Mg, CEC, %Sat., Zn, Mn, S, B, Fe, Cu, and Na analysis done at the lab. Lab fee's run under $5.00 per sample. Hired done, total cost would be $5.00 per acre which includes lab fee's.

I'm guessing the reason you're sampling 24" deep is because you're testing for NO3 but $30/acre seems awfully, awfully high to me. If you are running an NO3 test, I would think you could shop around a bit and get a better deal.