Thanks VillageReader! I had wondered if USB charging would be possible. That resolves my doubts.
Now I have managed to find an older Palm to buy and have shipped to me in China. The screen is a hair smaller than the TRGpro, but not significantly so. It is a stopgap measure.
I will be coming back to Canada in a few months for a visit. Then I will get something modern. E-ink sounds great! So does a Palm TX. The Nokia 770 is about to undergo an upgrade, so used 770s might be a bargain.
Having a WiFi enabled device on my home network could be ideal for both reading and browsing. I have long wished for a bathroom browser