Hey Buddy,
The Middle East in regards to housing is very expensive, you can get a 3bedroom villa +-14,000-18,000 QARper month a 4bedroom villa will cost around 18,000-25,000 QAR per month depending on size and location. The exchange rate is 3.63QAR/USD.

Most Expat contracts include housing, schooling, car, 1 family trip home per year, all gas/electicial bills paid by the company? That is in fact the reason most western expats remain in the middle east.

The house holding shopping i estimate to me 50%+ higher than the UK. Depends how you eat ofcourse?

I would also check with the schools regarding availablity prior to excepting the position, school placement is very hard to come by... get there phone number talk to them and ask availability! The 3 schools which i know about are Doha college, Park house english school and the American school, check them out on the net and make sure you make that call, there is nothing worst then getting here and finding out your kids cant go to school here.... and believe me it happens!

Doha is a very family kinda place, so you should fit in very well with the location community.

Regards,
Marco