I agree, don't let him get to 40,000, and try to build your economy in the meantime, and if your trainer gets to say 35000 to 40,000 a week, then get a new one. And try to get one that's under $20,000 if you can. But the main thing to do of course before your trainer's salary gets to high, is build your economy, specifially so that no one will out bid you. Because level 4 and higher trainers are in high demand.