I need a 320 grit or higher 3" x 18" sanding belt. Or a
variety/assortment pack that includes at least one 320 grit
sanding belt. Amazon has 10 for $21 (shipped), but here that would
be a waste of about eight of those belts. I need at most two or
three, and can get by with one for now. I don't mind paying more
per belt for fewer belts.

Or maybe I should just pay the $21 and forget about the waste of
belts.

Thanks.