Kitsilano Take Out
You might try Hot Cuisine2083 Alma St, 604-267-1131They have a variety of fresh and frozen entrees that are tasty: I think they are in the range of $8-10 a serving but some may run a bit higher. If you like Thai, Maenam, Montri's and Thang Thai are all in the hood. I believe Whole Foods over at Cambie does a range of prepared foods. Also Les Amis du Fromage http://www.buycheese.com/ on 2nd near Burrard has a variety of prepared soups and entrees that just need to be heated up in the oven.Maybe indicate the types of food you like and a budget.
1938 W. 4th Ave, Vancouver, BC V6J 1M5, CA
There is a place in Kerrisdale that caters to people that are just in your type of situation. Check out the Stock Up Cafe. They have "home-made" prepared and oven ready meals in single and family sizes. Their casseroles even come with in white pyrex oven dishes.
Stock Up Cafe
6019 West Boulevard
Vancouver, BC V6M3X2