Open Question: Looking for a good travel insurance?

I am going to turkey for a fortnight in 3 weeks. It will be me (45) my daughter (16) and her friend (16) we will be going on the 8th and back on the 22nd. I am looking for a good travel insurance that isn't too pricey. Right now i am verging towards the post office who are taking 35.50 for the three of us. Must cover the things that the post office cover