I attended the ADA Seminar last November.  Course cost was about $950 plus ransportation from Oregon, hotels, car, food, etc.

The course was a real eye-opener on engine management, and since it was about safety for myself, my wife, my kids, my friends -- as well as saving money on repairs and new engines -- I felt it was very inexpensive.  A point on why this is so special -- George, John and Walter have been swimming against the tide of "conventional knowledge (much of which is Old Wives Tales (OWT))" by designing and using scientific approaches and testing to engine care and management.  This is expensive to do.  As we benefit from their work, so should they.

Hal Morley (CJ6A, Bonanza F33A, Lancair IV-PT wannabe if the insurance gets straightened out)