That was my thinking as well. And it was a mom selling off her kids Lego collection that was no longer being played with. I already got it and it's about 100lbs (I don't have a scale but each box feels to be no lighter than 20 lbs). And out of two boxes that I've sorted so far- there's maybe 2lbs of minfigs and accessories ranging from Harry Potter, spongebob, Star Wars, dinosaurs, and random city people. Plus there's a decent amout of partial builds that will be helpful to look up online and see what sets I can try to find within the lot, one being part of a Harry Potter set. I can't wait to get to the other 3 boxes tonight and sort!