I'm not so sure. Weren't the early wave Armada minicons fetching insane prices for a while, like $30-$40 a set? Regardless, it's basically $14 a set, or double the original retail; someone may bite, I suppose. I'd hesitate to call it a "master" collection of minicons, though.
Master collection my foot. Not a bad start if one didn't own any Mini-Cons, but far from a "master" collection.