While buying up a ton of domains seems like a great way to make some extra money, the real world results show that it is very hard to make that process profitable. As with any industry, you will have those "golden moments" when someone you read about made it into a million dollar a year business, all while sitting in the comfort of his own home. That could be true, but he probably consumed a lot of alcohol and lost a lot of hair doing it.
Buying domains or registering domains–what’s the difference? There are many ways to acquire a domain. While available domains can be registered with any domain provider, rights of use from already-registered domains have to be purchased from their current owners. You can find different market places and auction platforms online that are tailored to these purposes. This kind of domain trade is...
Adding domains to our Premium Listings on our website before you sell will give them more exposure to the community. We’ll offer an appraisal for your domain to give you an estimated selling price, and you can adjust that price at any time. We also offer a comprehensive breakdown of our commission rates for all premium listings, so you can easily understand the process.

Use the advanced search option to quickly hone in on the type of names you are interested in. You can narrow the results by price, top-level domain (i.e, .com, .net, .org, .club, etc.), keyword, and many more filters. Using this feature will help you quickly sort through the millions of domains on the aftermarket and find the domain names that best fit your end goals.

There are many risks that would-be domain investors should carefully consider before buying and selling. The three largest risks are liquidity, subjectivity and legality, but there are also many other ranging from misleading appraisals to faulty escrow payments. Would-be buyers should carefully consider these risks before investing in domain names.
I don’t think that there is a real way to sell your domain fast, you can put it up for sale, depending on domain name, but if there is a fastest way to sell domain name, it’s certainly - having a good enough name, that someone would want to buy. I don’t like .com domain names, but that’s my opinion, instead I prefer Hacks ( I’m from Serbia, therefore most of word in English, in plural ends up with ‘s’, so every word that ends with letter ‘r’ in plural gives you .RS ) so I think that here we have great Hack domain names which would sell fast. Either way, your contact information should be available in WHOIS , so if you have an interesting domain name, every buyer would like to be able to contact you directly.

That said, my recommended budget for beginners would be $500+. Using this budget you could buy a bunch of high-potential $10 domain names, expired/dropped domain names or a mix of both. It’s very important to invest only what you can afford to lose and treat this as a side hustle till you get the momentum going. As you gain experience, industry expertise and some sales under your belt, you can then consider slowly growing your business into a full-time gig.