Below the list of 47, there is a list of the remaining Buk issues (30, 49, 54, 55, 56, 57 and 59) that are only available as reprints (these aren't in the group of 47). So, by inference, the 47 would seem to be originals to me.
Also, $10 seems a very fair price for an uncollected poem or two to me. Some of these have no uncollected poems, but others have 2 or 3. #37 has eight.