hi,
the chalet u are talking abt at Salang Beach is normally not for walk-in. hear the rates is somewhere bet RM250-RM400 per night, depending on demand and whether it's holiday or not.
I have been to Salang beach abt 5 time ... is one of the more commerical beach.. if i remember correctly, there are abt 8 chalets operator, each having their own abt 8-10 aircon/non aircon chalets. rates range from rm25 - rm40 for non-aircon and rm50-rm90 for air con chalets.
there are 7-10 diving centres (some are such that the shop is physically there, but no one there to run in)..
that's all i can remember for salang now..
btw, i drive to Mersing and transfer to ferry.. cost me and my mrs abt S$200 for 4 days plus return ferry, air con chalet and good food..
my $0.02