I don't know why anyone living in Jomtien and wishing to go to Sunnee or Boyztown wouldn't use the 10 baht Songtiow.
Going back to Jomtien late at night often requires other options I know.
The fare from Sunnee to Jomtien is 60/80 baht but then 1 farang can often weigh as much as 3-4 Thais.