I was really looking forward to the arrival of these items. But then, a completely wrong thing arrived in the mail. This was distressing. I contacted the third party vendor with photos (didn't want to leave any shadow of doubt). Then, they replied with apology and shipped out the right thing.
By this time, I had lost confidence and patience and started shopping for an alternative and researching the item itself. By the time the original purchase arrived, I had ordered something else + I had seen reviews showing that GTMax itself is a very inferior stylus pen to start with (in case the price wasn't enough warning).
So, all in all, it was an entirely negative experience, except for good and timely seller communication.