I charge $55 for a bore , hone, gasket surface prep, port chamfer, and cleaning. The other shops in my area charge $120, $80 and $95. I have three automotive machine shops within 3 miles of me. We're all good friends and most of them are far too busy building race engines to even screw around with Blasters so they just send them to me. I base my prices on a national average that's derived off of prices that are charged nationwide. I will say that the $55 I charge is well spent.