I finally got this endoscope after 33 days, from China via dog sled.

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

It's good enough for the price, but since ordering I found another one with
much better resolution for $10 more.

http://www.amazon.com/Waterproof-Mil.../ref=pd_cp_p_3

It's 22 feet instead of 30, but a customer posted a video (on the Amazon
page) that confirms it has better resolution and better light sensitivity
than the one I got.

It claims to be 2M pixel and the customer says it isn't that good, but mine
is only 640x480 and the video proves it is better.

There is also this one, which appears to have a 15 foot cable but the same
semi-HD camera, and a customer posted a youtube video of that also. It's
clearly better than mine.

http://www.amazon.com/Million-Waterp.../ref=pd_cp_p_1

The video:

https://www.youtube.com/watch?v=yfe6...ature=youtu.be

The two models with the better camera also do not ship from China and are
available via second-day.