The term flipping implies a sale that is done in a flip, or in a quick and sudden manner. You cannot be considered a domain flipper if all you do is just list your domain names and wait for years for them to sell. At its core, domain flipping is about spotting the right opportunities at the right time, involving strategic buying and selling of websites for profit.
That being said, many things have changed over the years. The days of MFA and quick flips are mostly gone. My advice to those new to domaining and wanting to give it a try is to take it slow, do your research, and if you do purchase a domain with the hope of turning a healthy profit - put some real time into it and build something useful. That way it's easier to monetize and easier to sell.
Wow I didn't expect A War & Peach novel, but, to have about 30 pages this is a very thin offering. My thought is if I get one idea from a $.99 e-book-it made it worthwhile. So there was mention in a keyword tool that might be helpful to me. But, generally speaking, As a s domain investor with sales under my belt, there is very little additional information that I can use here. If you are looking for a fast 10 minutes read this is it. I'd pass.
In theory, you could technically acquire a domain for $10,000 and be able to sell it for $100,000. You could also acquire a domain for $10 and be able to sell it for $100,000, $10,000… or $100, you get the picture. Because of this, it’s hard to recommend a perfect starting budget because your strategy, experience, and the pace at which you learn will hugely affect your buying and selling decisions.