Know your rights under the Anti-cyber squatting Consumer Protection Act (ACPA). This is the main federal law that deals with domain name trademark disputes. These distinctions are still a legal gray area, and being able to make these claims is no guarantee you will win a case. You should consult with a copyright lawyer to help determine the validity of your defense. If you are accused of cybersquatting, you may be able to keep your domain if you can make any of the following defenses in court:
If you buy a domain from a 3rd party, the backlinks are valuable. I always wait a few months before redirecting, so just set up a quick minisite until two page rank updates have passed and then go ahead and 301 redirect. However, it seems that you'll get the link juice from the back links, the anchor text is ignored by Google. Buying a domain at Godaddy TDName expired auctions, seem to not count as a dropped domain if you immediately set up a mini-site.
In theory, you could technically acquire a domain for $10,000 and be able to sell it for $100,000. You could also acquire a domain for $10 and be able to sell it for $100,000, $10,000… or $100, you get the picture. Because of this, it’s hard to recommend a perfect starting budget because your strategy, experience, and the pace at which you learn will hugely affect your buying and selling decisions.