Just got a beautiful pair of like new red silk Stuart Weitzman designer ballerina-style flat shoes at a thrift shop for $1.99. When I researched it on the internet, they were worth at least $250! They had no wear at all, and I wondered about that until I saw that they were marked 8 1/2 and they fit me who usually wears 7 1/2 to 8. So they were too small for whoever bought them.
Just another reminder of watching the SIZES of things at resale/thrift shops. Often the marked size is inaccurate and that's why the item ends up there! (Mostly because they are too small for the marked size.)