I have had my faithful Brother Hl-1250 printer for 4 years. The toner and the drum now both need replacing. To buy these both will cost the guts of £200. Looking across the web retailers I can pick up a brand new printer for half this cost. Do you simply throw a perfectly good printer away when the consumables are finished and buy a new printer at a fraction of the cost?
Unfortunately, modern peripherals and PCs change too fast to be worth repairing for more than a couple of years. Four years service is not bad. I found the same when my Epson EPL5500 packed up. A new EPL5900 printer was less than a repair, twice as fast as the old one, twice the resolution, and cheaper. There are some charities that recycle old stuff in third world countries, but I doubt if they could use a non-working laser printer.
If you want cheap running costs, consider a Kyocera printer. click here (Kyocera Mita FS 1020D - Printer - B/W - duplex - laser - Legal, A4 - 1800 dpi x 600 dpi - up to 20 ppm - capacity: 300 sheets - parallel, USB £219 including VAT) Samsung are also said to be excellent. I use toner refills from click here for my Epson.
It just doesn't make sense to spend £200 on a repair.