T one said...
4 hrs from ho chi, about $us 90 each way. food/drink/accom cheap as...
$90US....or $6 on tourist bus, or private cab for around $50-60, or book into the Sailing Club and they come and pick you up.
Accom can be from $10-$250+ per night. Even the $30-60 p/n range gets you some amazing places. Cheap seafood and beer, If its off shore, ask around for the secret place....about 10minutes by taxi/moto
Have fun