While there are several decent but very low cost VHF/UHF rigs out of China so far this is the first HF transceiver I've come across. For $200 built, including Icom compatible microphone, a few of us have bought them.
Here's a video of a QSO with Stephen, VK2BLQ.
The KN-Q7 was designed by BA6BF and uses familiar components such as NE602s. The kits or assembled units are available from CRKits from US$115. It's a crystal VXO arrangement and you order according to the sub-band you want.
The case is very solid and will survive a trip in a backpack with no trouble, coupled with low power requirements, this makes an excellent QRP rig for camping or emergencies.
Adam Rong, BD6CR/4, provides excellent service and communicates well via email.
The manual, which includes a full circuit diagram is here.
I received a nice note from Adam, thanking us for the writeup. Cheers Adam!