What is a domain? Despite this word being mentioned so frequently, it’s often unclear what the functions and structures of domains are. Knowing the hierarchical structure of the Domain Name System (DNS) is fundamental for anyone working in IT or in any online industry. We explain the difference between top-level, second-level, and third-level domains, and how you can benefit from subdomains that...
Yes! Selling domain is an emerging trade and no wonder if it can develop into an exchange. www.DomainX.org has been initiated with this view. There are some good ideas in the comments regarding which names to buy and how to grow their value. However one must not forget that it also involves a recurring cost (annual renewal) and keeping many of them might become difficult if you are not really selling at least a few to cover it. Enjoy free listing at DomainX.org.
Use escrow services for direct sales. When you are dealing directly with the buyer, make sure that any money that is transferred goes through an escrow service. This will ensure that all checks clear and that you aren't left with a bounced check and no domain. Escrow services may add a few days to a sale and cost you a percentage, but they can save you a lot of heartache.

METHOD 1: Find a domain name with huge potential and sell it as is – This option is tricky since many good domain names have already been bought, so your chance of being the next Mike Mann is highly unlikely. Understand that unless you have a single, generic word as domain name like these world’s highest-selling domains, it could take months or years to for your domains to sell.
Many top-level domains, or TLDs, out there have the potential of being sold at top dollar rates. Gone are the days when domain names with ‘.COM’, ‘.ORG’ and ‘.NET’ were known as top-level domains. Newer domain names with ‘.US’ and ‘.IO’ are also worth their weight in gold. All you have to do is conduct thorough research in order to find all the good domain names you can park.
For the following TLDs you can now find a expired/deleted domain list. .gi, .gl, .gy, .hn, .ht, .ky, .mu, .om, .pf, .qa, .rw, .sb, .sm, .sn, .st, .sx, .tc, .tl, .ug, .uy They also show up in the Deleted Domains (last 7 days) list and in the Domain Name Search, however they are not in the pending delete list! I do not have a working droplist for them yet, so that is why they are not released in the pending delete list yet.
.ac	.ae	.ag	.ar	.at	.au	.be	.bg	.br	.by	.bz	.ca	.cc	.ch	.ci	.cl	.cn	.co	.cr	.cx	.cz	.de	.dk	.do .ee	.es	.fi	.fm	.fr	.gd	.gg	.gi	.gl	.gs	.gy	.hk	.hn	.hr	.ht	.hu	.id	.ie	.il	.im	.in	.io	.ir	.is	.it	.je .jp	.ke	.kg	.kr	.ky	.kz	.la	.lc	.li	.lt	.lu	.lv	.ly	.ma	.md	.me	.mn	.mu	.mx	.nl	.ng	.no	.nu	.nz .om	.pe	.pf	.pl	.pm	.pt	.pw	.qa	.re	.ro	.rs	.ru	.rw	.sb	.sc	.se	.sg	.sh	.si	.sm	.sn	.so	.st	.su .sx	.tc	.tf	.th	.tl	.tn	.to	.tr	.tv	.tw	.ua	.ug	.uk	.us	.uy	.uz	.vc	.wf	.yt	.za

Another point of concern is that many people feel that squatting or registering domains is unethical. This is because many web developers have a hard time finding relevant domain names for their projects since most of them have already been registered. Many corporate giants also frown upon the domain flipping industry because many domain names relevant to them are already registered.
They see a domain’s price tag and they can instantly tell whether it’s under or overvalued. This is probably the most important skill one should have in this industry. Neil Patel has an interesting related quote: “The most important thing to remember when buying sites is that you always make money on the buy, never the sell.” In order to successfully do this, you must be able to spot undervalued domains. This is what will ultimately translate for you into a handsome profit margin when you get the opportunity to resell the domain for its “real value”.