As you know doubt know 7-8 star team isn't impossible with dedication over time, all 9 stars I'm not sure how much extra that would cost. I usually get to about 120% season just through packs, then back down to 100. I guess if someone spent 2-300bucks a month, they could get 9 stars.

I've done a lot of RMT in MMORPGs, and a lot of people aren't afraid to drop 500+ dollars on a game. Mostly Americans, though.