False promises and dubious promotion pricing
They boast about delivering on another day after making an order. However, I ordered two items on Saturday evening - and one was delivered on Monday, and the other one on Tuesday. So, why to promise a delivery on another day if you can't make it? I mean, usually I don't care and would be completely okay with waiting longer but it's just misleading and forces people to change their plans (on that Monday I couldn't easily stay at home to wait for the package but well, I had to).
Another point - promotion pricing. The item I bought was discounted by ~30%. However, I checked its price after the promotion ended - and it was indeed higher but just by a mere ~10%. The other item I bought, as I'm checking right now, is again discounted, just the promotion name has changed. So, again, misleading. You make people believe they make a nice deal while in reality it's more or less the regular price!