Prices are determined by availibility of wood, unusual grains, size, and the amount of work that goes into each piece.
I make most of my bowls out of 3 types of wood, walnut, cherry and maple (including ambrosia maple, a highly sought after characteristic of red maple).
The largest bowl that I am comfortable making is approx. 28″ L x 15″ W x 5″ H.
For a special order bowl, I request 1/2 of purchase price at time of order and the remaining balance when the bowl is ready to be shipped. It can take 2-3 months for a special order bowl to be ready, depending on drying time.