I have no issues with this product specifically. However, BUYER BEWARE! Amazon seems to be trying to unload it's expired stock by opening the packages, and removing the expiration date on each of the Zink packages inside the box. I ordered the 30 sheet box yesterday, and it arrived today. I had read other reviews stating that the expiration date had been removed but I was hoping this was a fluke incident. Turns out, it's not.
I realize that this product isn't super popular, and honestly I wonder if Polaroid will continue to make this paper at all (they don't have the best track record for "new" products). I assume that they figured the demand for this paper would be much higher, and hence they overproduced it. Amazon had too much stock, and now they're trying to sell what they have left by being sneaky and removing the expiration date.
I will still try the product and see if the paper works despite the fact that it's expired. I sent a formal complaint to Amazon and I suggest you do the same if this happens to you.
Note: I'm a Prime member, and I've had nearly flawless experiences with Amazon.com over the years, so this really is an isolated situation, but I think it's worth publicly explaining it so that other customers don't end up ordering paper which doesn't work. Once again, I will revise this review once I test the paper when I get a chance.