It means one set, one of each of the six that are in the game. You'll notice there are six different bases (plus six EX and six Almighty), with four copies of each. Take one of each of those, that is your set.
Ahh, ok I didn't look too closely at them it was really late and I wanted to read through the rules before crashing (after working a lovely 12 hours). Hoping to give this a try tonight, thanks again I figured it was something simple and I just was missing something