Oooo right, places to eat in Glasgow - so so many! I've gotten great offers from 5pm.com, Groupon/Itison and if you have an ATG theatre card you can get some good discounts.
Butterfly & Pig Tearooms on Bath Street - best value afternoon tea & meals, amazing cakes & lovely home cooked style good.
Antipasti (Sauchiehall St) yummy & good lunch, pre theatre etc menus, good value.
Sloans is quite nice & not too expensive. Roasters Deli, Smoak nice, about a million fancy burger places, loads of pub restaurants....that's just the city centre! Merchant City has a few slightly fancier places, vegan places, cake cafes, and also Tron Theatre Cafe is nice.