Yep! Completely. They are nicely polished and smooth looking, but just don't want to pierce the leather. I was actually able to sharpen them almost the same way as you would the awl. I use 800 + 1500+ 3000+ 5000 grit sandpaper on relatively soft thick leather, and finished with a strop. Now it is usable but still way far from my Crimsonhides ones.

Got one as well from taobao link above. Took the olive teeth, as i prefer it this way. It arrived yesterday, and i have to say it is a really cool tool for the money. According to my calculations getting it from there would cost around 120USD for the entire set (8+2) of 3mm, 3.38mm, 3.85mm, 4mm including full set of teeth. Which is a cost of one 5+2 set of high quality irons Im currently using. And it would be an absolute winner. BUT the teeth, even though are nicely finished and smooth, are absolutely dull. Im using a small 250g rubber mallet, and it works absolutely fine with my current sharp irons. 5 teeth requires me 1 moderately hard blow. With these ones i was not able to pierce 3mm relatively soft veg tan leather no matter how many times i hit. I have spent half a day trying different ways to sharpen them. I was working very carefully not to ruin the geometry. I used few fine grit sand papers, strop and felt disk on a rotary tool. The only thing i was able to achieve is 2 more of less sharp teeth which still requires same strength blow as my old 5 teeth one. Is there any way to sharpen those teeth faster without ruining? Please advise if anyone have some tips.

Try looking on Alibaba. You can find almost anything there but it will take some time to dig through all of those companies and normally they have minimum order quantity 50+.