Thank you for viewing. This is refill ink. Canon genuine BC-310 and BC-311. After complete cleaning, we have refilled them with new genuine Canon ink, and this is a set of black and color cartridges. We do not offer trade-ins for empty cartridges. We have set a low price from the beginning, taking into account the market value of empty cartridges (equivalent to 400 yen). Although there is no remaining ink level indicator, you can use it as usual with simple steps. * The cartridges are not compatible products, but always use genuine products (virgin cartridges). * Please refrain from purchasing if you are looking for perfect color matching or if you are sensitive to details. * We will include instructions for each model and printing examples. Compatible models → iP 2700 MP 270 MP 280 MP 480 MP 490 MP493 Shipping will be via Kuroneko Yamato (Takkyubin Compact). ● Due to the set price being the lowest possible, we cannot negotiate discounts. ● Please note that we cannot answer questions regarding each model (PC, printer, etc.), OS, or software. Thank you for your understanding.