Unlike shares, a domain has no quoted price and no continuous market. What it is worth is what a specific buyer will pay, and the only reliable reference is what comparable domains have actually sold for. The four things buyers pay for Suffix. A .com is the default assumption for most buyers. Mainstream endings come next, and country or specialised endings have a much smaller pool of buyers. Length and spelling. Short is worth more. A name somebody can hear once and type correctly is worth more than one that needs explaining. Meaning. Words that map to a real industry - finance, health, logistics, travel - find buyers faster than abstract strings, because a buyer can picture the business on it. History. A domain that carried a real site with genuine links can be worth more than an equivalent new registration. A domain with a history of spam or thin content can be worth less, because buyers have to fix it. Where to look for comparable sales Search the registrar and marketplace listings for domains of similar length, suffix and shape. Look at what they are listed at, and treat asking prices as aspirations rather than evidence - a listing that has sat unchanged for two years is not a sale. Common mistakes Believing liquidity. There is no market maker; if no buyer appears, nothing happens. Your holding period is measured in years, not days, and each year costs a renewal fee. Ignoring the renewal bill. Registering fifty domains is easy and cheap in year one. The renewal invoice in year two is the real decision. Registering trademarks. A domain containing another brand can be taken away in a dispute procedure, and the money spent on it does not come back. A word on expectations Nothing here is investment advice, and no registrar can promise a domain will sell. Treat any purchase you cannot afford to write off as a cost, not an investment.