The expense I had in mind was not rebuilding roller lifters, but the expense in the flat tappet to roller gig. I used to send mine to PBM for rebuilding. I think it was $180 back then. Not sure what the cost to switch today would be, but I would guess $ 1600-$1700. I used the moral lifter back then, I think I paid $250 for a set thru PMB. I real bargain for roller lifters.