Looking at the list it looks like most of the ones the destroy are POS. I bet the goon ones like the Sigs and the SWs are in the homes of some of the officers.
Goon = good
Most on this page are Rugers, Taurus, and Winchesters. Taurus may be a (small) step down from Rugers, but are generally pretty good guns.
I would bet that the average price on auction for this page would be closer to $200 than $100.
Sometime, the guns are worth more for parts than as a whole.
I asked about pre-1968 guns, many of which have no serial numbers.
I was told that all of them are destroyed.