The Mega Man: Robot Master Field Guide is back in stock at Amazon and it's affordable! You can grab your copy right now for $13.99 while stock last.
Published in 2012 by UDON Entertainment, this handy guide covers every major classic series character. You'll find profiles of every character up to Mega Man 10 and even the Game Boy series. Each profile includes full bios, quotes, likes and dislikes, weapons, and Robot Master weaknesses. If you're new to the classic series, this is a great reference tool to have on-hand for the Legacy Collection.
It's safe to presume stock won't last long. If you missed it the first time or just now hearing about it, I advise you to place and order ASAP!