A few weeks ago I bought a domain that dropped. That domain was celebrityfashionblog.com. Today, I sold the domain for $200 via Sedo.com. This is the most I've gotten so far (and so fast). It's not uncommon for me to buy a domain for $7 and "flip" it for $50-$75 per day.
All I did was:
Searched for dropped domains with niche keywords, popular keywords, etc... like I do every day
Bought domains (I bought more than I should have. It's addicting LOL) for...