Hey, you there? The store with all that clothing on clearance? If you want me to take any of it off your hands, put the damn sizes in a visible place on the hanger. I’m not going to dig through hundreds of one-of-a-kinds hoping that this time it’ll be my size that you have left.
And sorting them into sections of sizes is not much more help unless I somehow arrive immediately after you’ve put the stuff out for sale. People cannot be trusted to put stuff back where it came from.