On Sale! Canon E20/E40 toner cartridges. Andrew Lu April 20, 2010 April 20, 2010 No Comments on On Sale! Canon E20/E40 toner cartridges. We 123ink.ca are selling toner cartridges of Canon E20/40 with the price of $38.50 only. This Canon E20/E30 toner cartridges is compatible with multiple canon printers such as: Canon PC-310,… Read more »