Don't ski to go pro, ski to have fun, you'll get more out of it.. and if you want to get better, you don't need a private coach.Try progressing the ol' fashioned way, push your friend to try new stuff and he'll do the same to you, and if you still need pointers for new tricks, ask someone at the hill who is tearing it up that day. We're all on the same team here, if you ask for some trick-tips, 9 times out of 10 you'll get them along with some encouragement.
And after all this if you still want to get a coach, get a job and save up your money. I think it would be awesome to have someone to coach me one-on-one but it's not newschoolers' job to provide the funds for it, ya' dig?