I recommend looking in Tesco. They have a range called Eat, Live, Enjoy. I think the target market is people on diets because most of the meals are 500 calories or less, but they're so tasty! Currently they have a 3 for £5 deal, so that's about £1.67 per meal. Most are microwaveable but I don't think the fajitas are (which is a shame because they're delicious.) There are options like beef chilli, tandoori chicken with rice, and one of my favourites is the Moroccan chicken with couscous. There are also other options including a carbonara, but I don't really like cream or mushrooms :3