Where to Find Premium Domains

It's a question which nobody can possibly answer confidently (especially without knowing what the domain-name is!).

If it helps, here's one of the key concepts of domaining, for you: domain-names don't in themselves have any value beyond their reg-fees. What you can sell a domain-name for will be determined in general by the market and specifically by your own skills at identifying and approaching people to whom the name may have added value because of the nature of their own business. However and wherever you sell a domain-name, the price achieved is always likely to be much higher if as many as possible of the potentially interested parties are aware of the sale.

This is not a business in which one can quickly/easily "learn to recognize value" and immediately start buying domain-names and selling them all for a good profit - it just doesn't work that way, and there are reasons for that. It has a real learning-curve. Like anything else on which profitable businesses can be built, it requires education, skills and practice.

If you want to learn about trading in domain-names, I'd suggest that this is a good starting-point: http://domainprofitsacademy.com/subscribe (Gene Pimentel is the person whose advice, on these subjects, you should value, respect and acquire. Might as well "start at the top".)