Just so you know where my advice is coming from.
I have two pretty expensive banjos. I have only really ever played these two banjos. I once played a cheap bottlecap in a pawn shop and the 5th string tuner would not go to pitch. I played a couple of notes on some cheap Guitar Center banjos once. And I had an old cheap asian tenor for a while.
So my actual experience is pretty limited. I’ve read a lot of stuff on the internet and heard the advice of others but that’s it.
So most of what follows is from what I’ve read on the internet and not personal experience.
I would not buy a banjo from Amazon.com. Savannah, Alabama, Morgan Monroe, Tradition, Fender (not vintage), Washburn (budget models), Epiphone… these are all the same banjos, made in the same factories with different names put on them (like old style House brands).
Recording King has their own factories in China (except for the low end models, like the RK20) which were set up and supervised by former Gibson manager Greg Rich. This is why they have such a good reputation.
One of the reasons my first banjo was a very expensive Nechville banjo was because it was easy to set up. Set up means adjusting the neck angle (with shims or shaving the heel) and adjusting the head tension (like on a drum). This seemed intimidating to me so I went with a hi-tech banjo that was really easy to set up (not the route I would suggest). You can be pretty sure that a banjo from Amazon or even Guitar Center will probably not be set up, nor play very well out of the box.
If you become one of Ben’s students, then check out the Steve Huber Banjo maintenance lesson. This will demystify a lot about banjo setup and will enable you to do it yourself.
Be patient. In budget banjos, look for a Deering Goodtime, and check out reviews of Recording King and Goldtone and Goldstar models you may come across.
You CAN get by with anything else, even a cheaply made bottlecap (so called because the flange, which holds the tension hooks look like a cap from an old style Coke bottle) but when it comes time to upgrade (which you will do if you are serious) or time to sell (if you find that the banjo is not for you) you may be stuck with giving it away.