Bests & Worsts Reviews from Amazon

Received four-pack of cartridges. When we install any of them in the printer, the printer rejects them as counterfeit. The packaging looks legitimate. The back of each box is stamped with the words, "CZECH REPUBLIC" and an expiration date. Also, all the text on the packaging is printed in six languages. The English word "colour" is always with the British spelling (ie, includes a 'u'). These may be legitimate European cartridges. The wording of the printer's error message leaves open that possibility, if I recall correctly. In any case, they will not work on our US HP 8600 Plus. I called Amazon and they immediately said they'd send a return shipping label and issue a refund. Amazon customer support is impressive. I've only had to contact them a couple of times over the years, but they've always been immediately helpful.