I'm kinda wondering about same thing. I have two pairs of standard shoes, which I don't want to wear anymore. They are UK4, and I realized that UK3 1/2 works better for me. They do not look like new, though. Also, in the same line - is there a place where I can donate boys' dance shoes? I have a size 3 boys pair, which my son barely used. I paid $100 for it, it does look like new, and I would like to have a receipt for deduction if I am donating it.