Goa is great because it's a fabulous winter destination, very little rain over the whole season.
We've struggled to find an alternative destination for November that suits us.
We wouldn't go to Europe during the Goa season (Nov through to April).
We are lucky to have the time (and at the moment - the money) to take more than one holiday each year - usually 3 weeks after Christmas, 2 weeks in summer (Europe) and then 3 weeks again anytime between September and up to Christmas.
We tend to consider the total cost of the holiday, not just how much it is for flight/accommodation or how much it costs to eat out.
So, I think if it was as expensive to eat out in Goa as it is in Greece or Turkey (I'm not exactly clear what grannypat's original question meant), we may consider going somewhere else in the Far East.
I've noticed that package holidays to Goa at this stage of the year are at least £250 more expensive for exactly the same dates/accommodation as at this time last year (yes, I DO keep notes!) - e.g. 3 weeks departing 15/11.
If that trend continues, we'll be seriously rethinking our holiday habits.