differance in exchange rate

hi all
Although i read through the forum regular after a de from tripadvisor spoke highly of it,
this is my first post on the icr forum but felt you guys have the knowledge to help, can anyone explain why icmeler seems to get a better echange rate than marmaris? not complaining of course, just interested as we have noticed the last few years icmeler has been better, has this always been the case?
Although i read through the forum regular after a de from tripadvisor spoke highly of it,
