At the end of each contract you re-negotiate...for time AND money. As an above poster stated: has little to do with the role, but with the experience, and draw power.
It's rumored that ALL the OBC of SA started at minimum. It wasn't until their contracts were up that they were able to negotiate for more money.
I know Bashoff went through a number of negotiotions: first when his original contract expired...same date as Lea and Groff, and then again for the tour. They actually wanted him to take a cut in pay on tour. I don't know (or care) about how much he was making at any point. (I'm sure there were negotiations at the begining as well since he had only been wooed for the tour, and then they pulled him in early when Gallagher left earlier than the producers anticipated.)
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.