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, a set of black and color cartridges. We do not offer a trade-in for empty cartridges. We have set a low price from the beginning, considering the market trade-in price of empty cartridges (equivalent to 400 yen). Although the ink level indicator is not available, you can use it as usual with simple steps. ※ The cartridges are not compatible products, but always 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.