* A work of art that's appraised at $10,000, for example, but that's priced for sale at $5000, is not necessarily a bargain. As stated above, a retail or insurance appraisal can be many times the fair market value of a work of art. Always determine fair market value first, no matter how big a bargain the seller makes you think you're getting.
In general the aircraft must be at least 500 feet away from any person, vessel, vehicle, or structure. In congested areas the aircraft must stay 1000 feet above the highest obstacle within a 2000 foot radius of the aircraft. There are special rules for helicopters that allow them to fly closer than these general limits.
Answer Wiki. The limit is not actually on ounces of liquid, but on the capacity of bottles you bring on the plane that contain liquid. And the amount you are allowed depends on the country. A typical limit is 3.4 ounces (100 millimeters) but check online with your airline/airport, and do it for every country you are going to visit.