I am thinking of selling some Cross Locks as I have four single plain blade ones and two serrated single blade models. They are all NIB and if I recall correctly I paid about $30 each at Kmart when I bought them. I have not found any on Ebay, so anyone have any idea of their value today? I bought them in the 1990s. This is not an offer to sell here, I just am wandering if it is worth selling or keeping them....thanks