Guitar-to-USB jack? Dude, the Humble Bundle didn't say a word about that one. It seems to cost about $30 on Amazon (and that's without counting the guitar itself, which rounds $80 with the full starter kit). Also I have to consider the import costs since I don't live in the US, which easily skyrockets the price to double that - a grand total of about $220 that was not included with the price of Rocksmith 2014 (the software). However, it would be worthwhile to learn how to play guitar. Someday.