Tread carefully - Proelia TX010 Folding Knife, 4in

I had purchased a few of these because it seemed like a good deal. Once they arrived, they felt good and solid in my hand. I took them to my local knife shop to put a better edge on them(as they have better equipment than I). They took all 3 back at the same time, brought all 3 back and refused to sharpen them. He stated that he believes there is something wrong with the heat treat on all 3. Skeptical of that kind of luck I took them to a blacksmith for his opinion. His conclusion was the same. I have reached out to Proelia several times with no response back(I have literally tried about 10 calls/emails). I guess I will just use and abuse like every other cheapo knife I have. I honestly expected a knife with a base price of over $100 to be better. I will avoid Proelia like the plague from here on