Just come back from Ovacik, here are some prices.

efes 4 - 6 Lira
set meals 12 - 20 Lira
Soft drinks 3 - 6 Lira

boat trips ranged from £5 - £20
quad bike tours £23 - £28

if you're staying in the area, I highly recommend the Palm tree Bistro, El nino and Shine Indian in Hisaronu. Great places to eat.

One last thing, the weather was absolutely ROASTING.