We don't sell mechanical flat tappet lifters, without the EDM oiling hole. It's not worth the risk.
Our pricing for our US made lifters with .024" EDM oiling hole in lifter face:
.842" : $167.40
.875" : $188.43
.904" : $202.93
If you want to buy the lifters from us, you can send me the cam, and I'll parkerize it for free.