@cam it depends on your body size and shape, ie are you quite tall or quite short, and have you test ridden a bike with a similar geometry, weight, technologies, etc. And it depends on how adjustable the bike is, what your preferred riding style is, etc.
I bought a RadWagon without a test ride a couple of years ago. I took a risk that I’d fit, based on their claims (and reviewers assertions) that it was super adjustable to a wide range of riders. Turns out that was correct, but I disliked the lack of a torque sensor, and the mechanical disc brakes. So I sold it after a year.
Personally I wouldn’t buy from an online brand without some kind of local support again. Especially easier returns.