I looked at these reports when I was researching BCV last year and their figures are always so much higher than anything on here. They have an average of $147 in October and $152 in October! I went through years' worth of ROFR threads on here and only ever found 2 sales above $140, and the average around then was a lot closer to $130 (not enough data for a monthly average really but $133 for previous 6 months, $131 over a year).
I did wonder if they were giving listing prices, but as it states sales prices I assume that a lot of the buyers just aren't as knowledgeable as people on here!