I really want to know what happens afterwards. Sometimes it makes sense - a widow trying to clear out her husband's garage without much understanding of what it is - so prices it what she remembers him buying it for.
But others are run by professional estate companies; either they know they can get certain prices online (where?) or they do some form of scam where they overprice everything and when it doesn't sell they offer some "bargain price" to clear the house out.
^this. Typically there is even a standard where, for example, on a Thu-Sun sale, Thursday and Friday things will be priced as marked, Saturday will be half the marked price, and Sunday will be 1/4 the marked price. It's essentially a form of price discrimination: if you want the thing badly enough, you'll come earlier and pay more. If you're willing to chance it, you can maybe get 75% off by rolling in on Sunday.
But others are run by professional estate companies; either they know they can get certain prices online (where?) or they do some form of scam where they overprice everything and when it doesn't sell they offer some "bargain price" to clear the house out.