The "AVT-8710" is actually a rebranded Cypress unit, the CTB-100. The Cypress units isn't available in the USA, but only as the AVToolbox import. The CTB-100 is only available on eBay
here. The UK, however, has the Cypress unit in online stores. The case are available in at least 4 color schemes internationally.
Beware, however, the issue with bad chips from 2011-2012. I'm not sure if Cypress ever fixed it.
As "expensive" as it seems, the Datavideo TBC-1000 actually isn't unreasonable compared to rack-mount units. The AVT-8710 is actually quite cheap. When it worked perfectly, that was awesome. When it didn't, it was cheap crap. Buying one now, to me, is a complete gamble unless you know how to test it.
I'd suggest the TBC-1000 to anybody lacking advanced experience.
also, sometimes, has the TBC-100, TBC-3000, TBC-4000, TBC-7000, etc.