Finike will probably be cheaper than Marmaris in terms of marina cost, but I'd doubted very much that they have the same quality of labour there. The marina in Finike is in downtown but 2,5 hours to closest
airport, whether it be Dalaman or Antalya.
BTW, all
marinas are very busy and it would be wiser to book a berth as early as possible. If you choose to come to Marmaris, PM me, I will help with the marina and works.
Cheers
Yeloya