Gotta be honest with you, that had better be a -lot- of money.
Even just butted chain, a long sleeve thigh length tunic is hundreds of hours of work. Having made a bunch of 14GA galvanized butted chain in the past, I wouldn't even consider billing anything under $2k for a full shirt if I was going to come out ahead after all the time and materials cost.
That said, you can get some pretty decent riveted mail on ebay/amazon these days for a couple hundred bucks.
Try Will Kinkaid. I know he has in the past made armor, he made my brother some nice scale mail for his upper arms, but unsure if he does chain mail or not.