Food and drink at Bodrum Milas airport is very expensive. Two pints of Efez and two portions of chips cost £13 last summer! Even if you have soft drinks instead, it is still a lot of money if you are travelling with a family. We make sandwiches for the journey now. It saves about £5 per person. You are still stuck with buying drinks as you are not allowed to take liquids over 100ml through security.
Updates
The 100ml liquids rule doesn't apply in Turkey - we always bring drinks (and snacks) with us in our hand luggage for the very reason given in the tip above.
Is this your business?