A taxi is about 50-60 pound each way. Have you considered http://www.transfer4cheap.com we used them last year and they do shuttle or taxi. The shuttle bus was really good it only cust us 35 pound return that was the total for 2 of us return. They only use small mini buses, the bus was there waiting for us and there was only a few people on it we reached our hotel in 70 minutes and we were the last stop. They really are good value. Also if you type HolidayFox in the promo code you will get discount which will make return Taxi Transfer 101.77. Shuttle transfer with them is cheaper and reliable but depends how many are in your party.

Steve

Sorry just read your orignal post, and see there are 4 of you a shuttle would cost 69.76 for your party.

Steve

Taxi from Dalaman Airport to marmaris is 125 Lira.

Or 101.77 pound return with transfer4cheap using the discount code of Holidayfox.

Steve