Exeter is (according to something published a short while ago) one of the most expensive cities in the UK. It's not as bad as London and the South East, but a lot more expensive than the rest of England and probably most of Wales, Scotland and Northern Ireland too. Accommodation ranges from about £60 a week (cheapest self catered) to about £140 a week (most expensive catered) so it depends where you live. If you're in self catered, food won't cost more than about £20 a week if you shop at Tesco and look for the special offers, and laundry currently costs £1.70 per wash and £1 per tumble dry. You won't need transport much because Exeter is small as far as cities go, so you'll usually walk everywhere, but a bus into town for shopping won't be more than about £1.50 and taxis are cheap if you share with friends (although they're also quite hard to get and extremely unreliable!) As for entertainment, I wouldn't really know because I don't go out much, but as long as you don't go mad on the drink, go somewhere cheap like the Imperial and don't go out every night, it shouldn't be too bad.