I have been dealing with a large corp, buying their nearly perfect endmills for scrap. They are mostly 1/4, 3/8, flat and ball, mostly flat. They are still very useable, but that super crisp new cutting edge is not quite as new. They change them very often on a production run. For over a year I have been buying 25-30 pounds about every two weeks and have around one thousand pounds now. I was paying $5 or so per lb and figured I could always get my $ back in scrap anytime. Carbide is now $3/lb. My question is, does it make sense to find a resharpening service and offer them say three pieces to sharpen one and them keep the other two or something down those lines? If this is feasible, what kind of exchange deal sounds about right for an asking starting point?