I recently moved to Reading, and we found housing to be expensive if you wanted what we wanted, but there are many far less expensive options. We wanted large bedrooms, a place with no stairs (I have knee problems, so we had to get a flat -- which means less space for your money, typically), lots of closet space and a washer/dryer and dishwasher. We got all of that, but we pay a fortune. If you don't have all those requirements, then yes, you should be able to find a decent 3-bedroom house for 750 to 850 pounds a month. I don't know where someone found a 3-bedroom flat for that price, though! If you want the mod cons, big rooms and built-in wardrobes, you'll pay a lot more. Check rightmove.co.uk and findaproperty.com. Depending on where you're moving from (are you coming from the States?), you may want to hire a relocation agent to sus out a nice area and a selection of properties for you to view when you arrive. If you're interested, I'll send you the name of company we used -- they did a good job and did it for less than some of the bigger agencies.
Because of my knee problems and the fact that I haven't started looking for work yet (we moved for my husband's job), I've not been out and about much in the town. But I can say it seems a nice place to be. There are some pretty park areas and it's easy enough to get groceries and other items delivered if that's what you like. There seems to be a decent amount of places to shop, including a Costco (but no Ikea). From what I understand, it's an easy train ride to London and costs about 13 pounds return fair.