Yesterday they offered HP65 ink cartridge for $9, I bought 2 and they emailed me few hours later claiming they're out of stock, yet they have them today for $22!, they could've just be honest and say they made a mistake.
Reply by ExtremePC:2019-11-26
I'm really sorry to hear that. It was definitely our mistake because we use our supplier's pricefeed. sometimes the stock and price is not upto date. Next time if same issue happens, please give us a call and we will definitely help you.