Where can I find genuine Epson ink for the L120 and how much does it cost?

Genuine Epson ink for the L120 can be purchased from Epson's official website, authorized Epson retailers (online and brick-and-mortar stores), and some major electronics retailers. Prices vary depending on the vendor and any ongoing promotions. Generally, a set of Epson L120 ink cartridges (including black) will cost between $40-$60 USD. Always verify the seller's authenticity to avoid counterfeit ink.