A "do it yourself" (DIY) domain broker approach involves bypassing expensive professional brokerage fees (often 10%–20% commission) by directly researching, contacting, and negotiating with a domain's current owner yourself. 

Executing DIY domain brokering requires a strategic process to protect your identity and negotiate the best price:

• Find the Owner: Use a ICANN Lookup or Whois.com to find the domain's registrant and contact information. If their email is hidden, use the contact form or "For Sale" page linked to the domain.
• Maintain Anonymity: Avoid using your primary corporate or personal email address when making initial inquiries. Register a generic or alias email (e.g., offers@gmail.com) to prevent sellers from inflating the price based on your company's size or budget.
• Determine Your Budget: Before making an offer, research comparable sales on platforms like NameBio or DNJournal to avoid overpaying for the name.
• Make an Opening Offer: Submit a firm, fair initial bid that is lower than your maximum budget to leave room for negotiation.
• Use an Escrow Service: Never wire money directly to a stranger. Once a price is agreed upon, finalize the transfer using a trusted escrow service like Escrow.com to safely hold funds until the domain is fully transferred to your registrar account. Escrow.Domains  is another service that is available.

https://www.brandshelter.com/blog/how-to-buy-a-domain-that-is-already-registered/

https://www.bluehost.com/blog/expert-advice-how-to-buy-a-domain-name-thats-taken/

https://www.bluehost.com/blog/domain-aftermarket-guide-buy-or-sell-premium-domains/

Welcome to domain-contact.org. Via this website you can send a message to contacts of a domain.