Dynadot is a mid-tier registrar with a substantial domain marketplace. Reasonable pricing on standard TLDs, plus a buy-and-sell marketplace where premium and expired domains are listed. For operators who occasionally want to buy specific premium domains (a good brand name, a category-matching keyword), Dynadot's marketplace is more transparent than the alternatives.
Pricing. Standard-TLD pricing is competitive but not the absolute cheapest (NameSilo edges it on raw renewal cost). Where Dynadot wins is the marketplace transparency — you can see who is selling, what the asking prices look like, and how the auction mechanics work without the opacity of broker-only marketplaces.
Adult-content posture. Standard registrar posture: no content policy on the domain itself, related services have standard mainstream policies. Marketplace transactions involving adult-themed domains complete normally.
Who it fits. Operators acquiring premium or aftermarket domains alongside fresh registrations; multi-domain portfolio managers who value the marketplace as a discovery channel; operators wanting a single registrar that handles both new registrations and aftermarket purchases.
Bottom line. Good choice when the marketplace matters; otherwise Namecheap or NameSilo are simpler.