Picked up a large lot on Craigslist for $150. Unfortunately, no instructions. Sets were put together still for the most part. I've been able to identify the following sets. No idea if they are complete yet, but I was able to go through the large bucket of figures and find that at least they are all included for each set that I've identified thus far. Here's what we've located to this point:
3181-1 Passenger Plane
4202-1 Mining Truck
4203-1 Excavator Transporter
4209-1 Fire Plane
4432-1 Garbage Truck
4439-1 Heavy-Lift Helicopter
4738-1 Hagrid's Hut
4842-1 Hogwarts Castle
5868-1 Ferocious Creatures
7037-1 Tower Raid
7048-1 Troll Warship
7094-1 King's Castle Siege
7097-1 Trolls' Mountain Fortress
7498-1 Police Station
7947-1 Prison Tower Rescue
9465-1 The Zombies
9469-1 Gandalf Arrives
9474-1 The Battle of Helm's Deep
9476-1 The Orc Forge
10188-1 Death Star (Boxes 2, 3, and 4 are all still sealed)
10193-1 Medieval Market Village
21105-1 The Village
21106-1 The Nether
31005-1 Construction Hauler
60001-1 Fire Chief Car
79000-1 Riddles for the Ring
79001-1 Escape from Mirkwood Spiders
79002-1 Attack of the Wargs
79003-1 An Unexpected Gathering
79010-1 The Goblin King Battle
Not a bad haul for $150