Dollarama sells a $4 ceramic paring knife. This is amazingly cheap. But is it any good?

Kyocera pioneered using Ceramic as a knife material. Ceramic is extremely hard. The edges will last probably 20 times longer than a steel knife. But it is very brittle, so it chips easily. 

New, it scored 390 on my BESS Sharpness Tester. OK, but not great. (A new steel knife scores 300-400. I sharpen steel knives to 80-120). However, it will stay around 390 for a long time.

Is it worth $4? Of course it is. Made in China, of course. I read somewhere they wholesale out of China for about $1 each.