I've been working on my $1 FRN collection for a year or so now, and I'm coming down to the last few notes to complete it.
I'll back up a bit, my collection consists of one CU regular and one CU star note from each series. For 1988A and beyond, I also have one CU regular/star from each BEP facility (so, up to 4 notes per series). Eventually I'll work on the web-fed notes and other experimental notes as well, but for now I'm happy with the basics and stars.
The ones I'm missing are stars from 1981 to 1993. These are markedly more expensive than their counterparts from surrounding years/series when I'm cruising for them on
ebay, but they don't necessarily seem to be any more scarce than earlier and later notes. With the exception of the 1969C star note I need, which
does seem to have a much smaller total print run.
So, does anyone know why UNC star notes in the 1981-1993 range would be $10-$20 when the series around them are $5-ish? There just don't seem to be many available for sale in the first place, so maybe it's just a mater of supply and demand.