Blue only wore shoes for a couple of months last year. The rest of the time he's done fine barefoot. The only reason I had him shod last spring was that his hooves started breaking off on the gravel and I felt he needed protection.
When I can ride him three or more times a week, he keeps his hooves pretty sell worn down, except they get a little long in the toe. I guess that's because of his gait. So I call Randy, the farrier, to trim him up. Last time I did this, it was $35. I wouldn't be surprised if it's gone up, since everything else has.
We were at Orscheln's farm store today and purchased a rasp, or file, for horse's hooves, and also a hoof cutter. Together I don't think they cost more than $25. I think Cliff did a fine job, and as I told him, just this one trim more than paid for the tools he bought. I rode Blue after Cliff got done, and he seemed quite comfortable.
I'll guarantee you Libby won't be so easy to trim. I've never seen a horse any more patient than Blue: he's willing to stand all day on three feet, if that's what it takes to make us happy.