hi we have been a few times to kos tigaki and we have found that taking sterling travelers cheques has worked out better if change at theokritous travel they are a great helpwith the best rates on offer
I was at Tingaki 4th July to 18th July 2007 and Theokristas Travel DO charge comission (2%) if you exchange travellers cheques there. I can't comment on anything else because all we took was travellers cheques.
In Tingaki we got roughly £70 for 100 Euros which is more than we got back home in England.
Found cost of living relatively cheap , cheap to eat out even at the nicest restaurants so don't let the luxury looks put you off, found j & m supermarket on coast road by atki dimmy apartment the cheapest for most thing, whislt i found the large supermarket at the top of tingaki more expensive but a wider range of goods, exchange rates weren't bad at home in uk i got 1.38 in tingaki 1.44 just enjoy i only took £250.00 for one week self catering and i took £75.00 home even after a few pressies and eating out every evening at a really nice restaurant so i think it was very cheap
Use Theokristas Travel just up from the roundabout - they don't charge commission
they were expensive