This compatible Brother LC129XLBK extra high capacity black ink cartridge offers an incredibly economic way of running a small number of Brother printers. The LC-129XLBK offers an impressive estimated 2,400 pages yield, which is FOUR TIMES the capacity of the original LC123BK also available. This LC-129XL cartridge is designed to be used in the select few Brother printers listed in the compatibility section. The prices of our compatible Brother LC129XLBK black ink cartridges include VAT and postage and we believe them to be amongst the cheapest on the Internet.