I got fuel last week and diesel was 3.15. I believe gas was about a dollar more if I remember correctly. If you want an exact figure, Google harbor island fuel dock in SD.
if you are in Mission Bay there is only one fuel dock, it is self service and always about 25 cents per gal cheaper.
Freedom Boat Club while looking for next yacht
1997 SeaRay 420 Aft Cabin
2008 Rinker 350 EC
Engines
Cats 3126TA ~1400 Hrs
Mercury Seacore 350 (x2) OH/FL
Chrysler 350- Century Cheetah Mark II
Florida Central East Coast :
St Augustine- Marine Oil & Supply- Diesel with CC $2.48 ($2.41 Cash).
Tanker (Port Consolidated)- $1.99 (delivered to dock).