Does anyone know where i can bye cheap black cartridge as last one cost £27 rip off. Any help much appreciated.

For compatabiles of Lexmark ink carts try
www.choicestationary.com
www.mx2.org
www.xsct.co.uk
About £14 to £16 inc p&p

i've always be chuffed with speed and prices at www.cartex.co.uk and www.pc-ink.com
check out their site......no vat

Scrap the lexmark and buy a epson C20 or C40 prices around £38 to £46 at computer fair.
replacement copy inks For 5 Sets ( 5 Black and 5 Colour )around the £20 mark

have you tried the refill kits? I did it with mine, if cash is tight thats an option, its a pain but hey it does the trick.

tried the refill kits worked well first time, second time cost me more in turps to get the ink of my hands. Cheers anyway m8