Unfortunately due to the design of the printer we were not able to make a continuous ink system fit in the Pixma MG3650S printer, in our opinion this is the next best thing you are going to find with
Canon Pixma MG 3650 S (black)
Low Cost Ink & Toner Cartridges at Cartridge World
Buy Canon Pixma MG3650S Ink Cartridges
Compatible with Canon PG540XL/CL541XL Multipack
Canon Pixma Ink Cartridges, Pixma Printer Ink
CL-541XL Colour Printer Ink Cartridge Replacement for Canon 541 XL Compatible with Pixma TS5150 TS5151 MX475 MX530 MG3650 MG3650s MG3600 MG4250 MG4100 on OnBuy
Where to buy printer ink and cheap ink cartridges
Canon PIXMA MG3650-Accessories - Inkjet Photo Printers - Canon UK
Epson vs Canon vs HP printers: Who makes the best all-in-one?
MX475 Ink Cartridge Black & Colour High Capacity Multipack for Canon PIXMA