I am not 100% sure about this, as I can't read Chinese, but this is likely not 19 Japanese Yen.
> ¥ is a currency sign used by the Chinese yuan (CNY) and the Japanese yen (JPY) currencies. This monetary symbol resembles a Latin letter Y with a double stroke.
It is much more likely that it is 19 Yuan, which is ~$3.
Heh, I guess I shouldn't have believed the unbelievable price after all.
Still, $3 for a chip that does 'everything' isn't bad. From what I've seen everyone else wants 3x-10x more than that for chips (or, admittedly, sometimes modules) that do less.
> ¥ is a currency sign used by the Chinese yuan (CNY) and the Japanese yen (JPY) currencies. This monetary symbol resembles a Latin letter Y with a double stroke.
It is much more likely that it is 19 Yuan, which is ~$3.