Yeah it is actually, Natsume does both digital and physical releases, and their physical releases usually include a little trinket, which is cool - but here's the thing though: Natsume pretty much sells their physical copies directly on Amazon and Play-Asia as a third-party seller though they're pretty limited.
HOWEVER on Amazon a bunch of other sellers usually scoop them up and resell them at higher prices. So if you REALLY want it, you're better off waiting until there's a restock unless you don't mind paying like an extra $10 and still not getting a keychain...or just buying it from Play-Asia (though you'll pay out the nose for shipping whereas Amazon usually has Prime shipping)
http://www.play-asia.com/wild-guns-reloaded/13/70aba3
Alternatively, ask the reseller if the keychain is included. If not, then don't even worry about it and take your money elsewhere
HOWEVER on Amazon a bunch of other sellers usually scoop them up and resell them at higher prices. So if you REALLY want it, you're better off waiting until there's a restock unless you don't mind paying like an extra $10 and still not getting a keychain...or just buying it from Play-Asia (though you'll pay out the nose for shipping whereas Amazon usually has Prime shipping)
http://www.play-asia.com/wild-guns-reloaded/13/70aba3
Alternatively, ask the reseller if the keychain is included. If not, then don't even worry about it and take your money elsewhere