If your looking for 100% quality work than you can try the Fanattic or contact Great Plains Cresting directly.
They do all the Flames lettering and my experience has been always great. Work lasts a long time and the quality stands out. I think it's around $90 total.
If you plan on keeping the jersey for a long time and wear it/wash it often, you will want to make sure you have quality cresting for it to last.
http://gpcresting.com/
Good Luck!