^ I did end up deciding on a 36v 500w kit with pedal assist. I was kind of thinking the same things you mentioned. It has that and a small lcd display for the pedal assist setting and battery level. It was cheap, but as long as it works for 3-6 months so I can get an idea of how I like using an e-bike then I’m happy.
I’m looking at a generic Chinese battery. I’m skeptical, but have read in a couple of different places that this site is decent. They have a warehouse here in the US and offer an 18 month repair or replace warranty - I would have to pay shipping back to US warehouse. Charger and Li-ion battery with 18650 cells with 13Ah rating for $200. Thoughts?