
dps writes:
Check out the ADuC702x series from Analog Devices. I’ve used them before, and they work well (but note the errata when you start using the A/D, as there is a “gotcha” in starting the conversion). They’re based on the ARM7TDMI processor and have several sleep modes for decreased power consumption.
Via the forum.

So, is there any way for a private individual to get them? With sane prices?
They start at about $10 in single quantities from digikey.com .
You can sample them. :)