GDW key chains: Gin, Jerome and Akame

Three rare Ginga Densetsu Weed key chains that I got from Urumi. ^_^ These ones have probably been in use, because original chains are missing, and they are bit worn.

What I know about these key chains is that there are 7 in total (Weed, GB, Jerome, Kyoushirou, Ken, Akame and Gin), and that there are also phone strap versions of these 7, only differense is the chain. I've heard that these key chains and phone straps have been on sale in actual stores, so it's a mystery why they are so rare.