Ken,
Yes there are companies out there that will resharpen, but I used to work for one that did and they use that program to get rid of the blades they make that don't make it through 1st inspection. If you send them 20 blades to resharpen, they measures those and maybe reject 4 because they are to short with a badly broken tip. Then they throw the other 16 into a box, takes 16 off of their stock shelf and send them to you at $7.00 or $8.00 each. Now that sounds ok until you find out that you had 20 premium Roland blades or 5 of mine in that batch and now you have 10 chinese blades that someone sent them and 6 from them that aren't as good as the ones you sent them, or some of the ones they sent you were marginal to resharpen and they didn't go back far enough to get all the wear out of them.
Am I saying it's not a good thing, yes. In my opinion it's a gimick, at one time they used to resharpen your blades and send them back, but it sometimes took 8-10 weeks to get enough to make it profitable.
Why spend 7 or 8 bucks + shipping for marginal blades when I will sell you guaranteed new blades for $12.00 and I pay shipping.