Vonnegut in Demand

It seems that AbeBooks' evidence confirms my anecdotal observations about the sharp rise in demand for Kurt Vonnegut books after the author's death last week. On Friday in the shop, I got multiple requests for Vonnegut titles (all of which had been sold the previous afternoon); AbeBooks reports that of their top ten best sellers for the week of 8-15 April, four were by Vonnegut (1, 3, 9, and 10).