Napa Valley prices have gone up significantly since Villa Ragazzi's last release (1998 vintage), then down again with the dot.com bust, and endured more downward pressure in the late 00's thanks to oversupply and an imploding economy. Prices are now on the upswing following two short vintages. There isn't enough Sangiovese on the market to study pricing evolution, but the example of Silver Oak Cabernet tells a story: their 1998 (a vintage unfairly bashed by critics) was released at $70, and some is still available online for prices ranging from $70-$217. Silver Oak 2009 is listed at $120.
So I guess I'm doing this wrong. But it feels right.