While the above mentioned site is entirely legal, let me state that I have a HUGE moral objection to what they are doing.
In my opinion, one of the greatest threats to personal liberty in this country is asset seizure and forfeiture laws that have grown out of the war on drugs. Your property can be taken from you, despite your never having been convicted of a crime.
Even in the case of legitimate seizures from convicted felons, it's a bad system. Again, in my opinion, you never want to give police a direct monetary incentive to catch criminals. If they don't catch enough criminals, they may be tempted to make people into criminals as substitute targets.
And there are many documented cases of exactly that.
Any proceeds from legitimate seizure and foreiture after convictions should go into the local, state or federal treasury. It should not be used to buy weapons, vehicles, SWAT gear, etc. Our police forces have had a field day with these seizures, leading to well funded but idle SWAT teams all over the country, looking for something to do. And that leads to SWAT teams being used on no-knock raids in the middle of the night, sometimes with disasterous consequences for innocent people.
Just yesterday, I read a case of a SWAT team in Maryland kicking down a door in the middle of the night. The reason given on the warrant? A teenager from that family (now a grown adult living elsewhere), had two misdimeanor busts for posession of marijuana in the proceeding eight years. The department in question reasoned that it meant he was likely to still have pot. They actually put that on the warrant, and a judge signed it. What did they find? Marijuana residue. They charged the father with posession, after arresting him at the muzzles of serveral AR-15s, having busted down the door in the middle of the night.
It's out of hand. And one of the reasons it's out of hand is that these seized and sold assets have funded a lot of SWAT teams that now justify their existence with midnight raids that are flat out dangerous for John Q. Public.
It's "protect and serve," not "protect and serve ourselves."
[/rant]