And there's a strong security reason to do so. I am motivated to buy an Arm machine which will be soley responsible for my:
+ Banking
+ Cryptocurrency
Because none of those take too much power, and they are all very security sensitive.
The software and motherboard schematics are totally open. It includes an mPCIe wifi card (Ath9k) specifically to avoid binary blob firmware.
If something refurbished is okay, go for a X200; they are pretty good machines. Here's the best part - a Chromebook, without the proprietary Mali drivers, it slow as a piece of shit; an X200 - I can watch a tear-free full-HD movie while compiling something in the background, with both cores at 100%.
Libiquity, Tehnoetic and Vikings still sell those laptops. Or flash one yourself, it's not that hard, and you need like.. 100$ worth of equipment.
LOL. I see a "Sorry for your loss" in your future.