Oops, yes you're right, it is a percentage of the net. I suspect that the contract in question is a relic from the sixties, when Hollywood accounting was nowhere as sophisticated as it is now and a percentage of the net actually got you some money.
I was surprised to see Tina be the first one eliminated. That was kind of shocking. I was hoping Jenna or Jerri would go first since I hate both of them, but I think their time will come. Richard is still the most entertaining one on the show.