Have you considered the option of a mono laser printer?
Under £60 and that will do 1000 pages. So may work out about the same price if you dont do colour printing that often. Then all you do is buy some colour cartridges for your old printer to keep it running for any colour work you do.
Ebuyer seem to do it cheaper but not sure what postage for you would be like on each site. £45 on there. Thats probably cheaper than the inkjet overall.