Hi Tom, I have also some experience with that: Vortex was $60 at the start of this year; No sales! Price was jacked up to $125 in June: I got 3 sales! So, I figured the following: Price= 250: 6 Sales etc. Doubling every 5 days till Christmass: P......Sales 500....12 1000...24 2000...48 By X-Mass I will buy the state of New York! Conrad