Just done mine at Balmain Mariana.
1560$, three days on slip, incl. 10L altex 5 and four L primer (my mate dropped one) and gurney (do it yourself) and one could work all day and night!
Managed 3 coats and propspeed was +150$.
The last one done by a Marina for $2600 barely lasted two years, apprentice did it, boss didn't check quality of workmanship.
If you want it to be done properly do it yourself despite the pain and suffering!
Btw the $100 dollar diver (on a 28 foot boat with reasonably clean bottom, he did it every 4-8 weeks) is Deniz 0413-990770