There must be some "conspiracy" with eBay Asia sellers where I can't find a good deal on 1/2W inductors any more. I got my lifetime supply a few years back on eBay for a couple pennies each.
In any case, if you're willing to try aliexpress.com and wait, there's a seller there where you can get 22uH 1/2W inductors for 5-10 cents each in small quantity (free shipping from Asia):
eBay: 191964602221, $6 for 100, six cents each shipped.
Aliexpress, 500 1/4w with shipping $5.56, so a little over two cents. These are smaller, but I suspect plenty of current handling for any LED lighting applications.
eBay: 192872567052, $15.98, a little over three cents each.