I ordered one a couple of weeks ago. Yip took my order, and promised delivery in a couple of weeks, so I'm expecting it to show up any time now. So judging from that, I'd say he's still in business.
I just corresponded with Yip two days ago and he is planning to make me a second protractor. So, I would say Yes, he is still in business. It did take about three days for him to return my email, but he apologized saying he is particularly busy. I have found his customer service to be excellent.
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