Let's just say, "you'll get what you pay for." I'd say, save your money... you aren't going to have an e-bike experience with that kit that is anything like a mid-level e-bike that you'll get from a dealer experienced in e-bikes. Today's mid level e-bikes ride like a new honda accord. You're trying to pay for a 1980's yugo and expect that it'll be nearly the same thing. Yes, that kit might work... but it's not anything like the e-bikes that are available today. Go ride one of these to introduce yourself to e-bikes. They are what I would call "mid-level."
https://www.specialized.com/us/en/sh.../ecityvadomens
If you aren't excited about pedaling, I'd suggest a 50cc scooter instead (I have one of those also, just for those few occasions when I need to get around quicker and don't feel like pedaling.)