The HP PSC 1315 is very good for a budget printer/scanner at £75 from ebuyer.
Alternatively, an even cheaper but almost identical version for £65 is the HP PSC 1410.
I used the model prior to the 1410 throughout University and I have to say it was excellent. It held up when most needed, printing two copies of a 150page dissertation in one evening without any stress.
To be honest you can't beat these for the money in my opinion, although anti HP people will slaughter them for unknown reasons.
The ink will be the expensive part of the printer as this is where they make their profit. Its easy to sell a printer cheap as people always have to come back for the ink! However, once again Ebuyer came through for me providing blank ink for my HP at about £11 a cartridge and colour ink at about £17 a cartridge.
Find the appropriate ink within this section of Ebuyer:
Hope this helps.