I bought a Camillus D2 arclite from A.G. Russell & had it shipped directly to Bodecoat to have the Diamond DLC coating applied.
Including the sandblasting to remove all the "graphiti" removed it cost $25.00 including shipping. If I had other blades to coat at the same time they would have done them for $2.00 an inch.
I am putting together a collection of my favorite knives to have done soon all at once!!
The finished coat depends on if the blade you have done is mirror pollised, satin, etc. as the coating is only microns thick, so it does not fill in any scratches of etching.
Hope this helps.