TECH2

Clones can be had for $220-300usd. It seems that adding a carrying case adds a lot of shipping cost and increases the price by $40 or more but worth it IMO to keep the device clean/protected/all together.

alibaba aliexpress etc

User manual: https://www.boschdiagnostics.com/pro/sites/pro/files/tech_2_users_guide.pdf

As an alternative that has all of the features of the tech2, look at tech2win and tis2web for updating. Even cheaper hardware can be used(VXDIAG VX NANO for GM). https://amzn.to/2N7uWRe wifi version

I got mine for under $100 on sale, and so far it has been working perfectly. Just have to follow the directions to get everything set up. As a bonus it runs a lot faster than the standalone Tech2 https://amzn.to/2IOioL4