I have seen charms with 40-42 pcs and some with half that. Just take a look at this page and you will see some with 21, 30, 40 and 42 pieces
http://www.fatquartershop.com/store/...=&Search_Text= I would definitely want to know the number of charm pieces too so I would call or email them to get the info. When I went to Hancock's, it looks like they put the number of charm pieces at the end of the title.
http://www.hancocks-paducah.com/Item...packs--srcin-1