It arrived already! I'm going to start off by saying that I've played for YEARS on Ragnarok Online and it's safe to say RO is probably my all time most played MMO, so this game has a lot to live up to. I'll give my verdict once I've played the life out of it. Hopefully.
Anyway, back on topic. The Mercenary Edition comes with all of the above; a 32 track OST, 10x Monster Cards which detail monster info and drops and the 96 page Mercenary Guide book which contains class info, monster info, maps, artwork, card info and strategies.