Eating out any where in Doha astronomical prices, some places u need to eat a sandwich will cost something like ten Qatar riyals (i.e +- 3 US $) the person who sent the first reply to ur query has summed it up quite nicely and honestly here are some of his comment
"want to have a good time for less in the Mideast,go to Dubai,you'll be spoiled for choice with bars,restaurants,shopping & activities to suit EVERY pocket..." ...........
please give it a serious thought before u venture in for this expedition