I have noticed that sales of a particular component comes and goes like the tide. Each set of waves within tide represent a different group of people buying the component. It always starts off with the guy who must buy new and is a dealer's buddy for equipment trade-ins. Thankfully for them, there are those at the next tide who only buy slightly used ones, then the next tide are those who look for bargains on yesterday's big names (like me ;), etc. With each tide comes a new rush of sales followed by a vanishing act where you hardly see them on the market for a few months. Anyway, just like everything else in life, it just acts in waves. Then, to perpetuate the cycle, people come to new conclusions on...the tide of the latest and greatest new products! Anyway, it's my observation and it seems to fit the data in most cases. Arthur