Should I join if I'm only selling $5K/per month on Amazon?
Our take is this: If you really want to diversify your sales because you're scared of having all your eggs in one basket (Amazon), then join.
What if I'm only selling $10K per month on Amazon, should I join?
If you're selling $10,000 or more per month on Amazon, then you NEED to diversify your sales on your own website. So join.
If I don't have a product live yet and I'm an ASM member, should I join?
Focus on mastering ONE sales channel first (Amazon). Once you are consistently making sales there, then you can diversify your sources of sales.