Can You Start With $12,000 and Grow a Business on Amazon?

Do you think it's possible in today's world to start with $12,000 or less and actually grow a business on Amazon? Or can you start with $ 12,000? It's just going to be a slow climb and maybe you'll have some beer money on the side. Since I started these couple of things, and this has happened in the last two years, is the profit margins reduced? So before we were looking at net profit margins, after advertising, after all expenses, kind of in that 25 to 30% range for private label. And in the last 2 years, we've seen that drop to probably 18 to 22%. There's freight costs, increased PPC,