I have no problem with folks getting a "good deal". I'm all for competitive free markets that offer the best products/services at the lowest price. Its the "knock offs" that I have an issue with. As a former business owner, I know the $$$, never mind the blood, sweat and tears, it takes to build a brand and the reputation that brand reflects. These "companies" (I use the term loosely) in China that blatantly use the same name (or very similar), logos, and "look alike" products as established brands are no better (if not worse) than common thieves. In China they operate without impunity because they don't respect or enforce global copyright laws...in fact, it's encouraged by that regime.
Frankly, purchasing these products is the moral equivalent of buying goods from a break and enter criminal that robbed your neighbour.