I have experienced this, to some extent. I sold my first domain, AmericaOnAI.com, for $299 within about four months of acquiring it. At the time, it felt like a solid win—quick turnaround, profit made, and most importantly, my first-ever domain sale. That aspect still matters to me, so the regret is not absolute.
However, looking back now, I do believe the domain had significantly more potential value than what I sold it for. As the AI space continues to mature and geo-based AI branding becomes more relevant, I can clearly see how a name like that could command a much higher price in the right context. That realization is where the partial regret comes in.
That said, I don’t fully regret the decision. Being my first sale, it gave me confidence, validated my approach, and helped shape my investment strategy. I also continue to hold several similar geo + AI .com domains, so I see that sale as part of the learning curve rather than a pure loss. In the end, it was both a lesson in patience and a milestone in progress.