If you talk to your local PGA Pro and he is a Titleist/FootJoy reseller he should be able to get some custom embroidery for you.
It becomes a question of volume. You can't order just 1 of something, generally you need to order 6 or 12 of an item to get anything custom done. If it is really special the cost can get out of hand pretty fast. There can be an artwork charge as well as a per piece charge.
Start with you local pro and he can give you all of the details.