All of these look to be light users at most and do not have any significant issues aside from scratches as shown. Blades are all relatively sharp. 

Sanrenmu 7010 Pocket 12C27 Blade Frame Lock Sebenza Style - Total length: 165mm/ 6.50in , Blade length : 69.6mm / 2.74 in., Blade material: 12C27 , Blade thickness: 2.5mm / 0.10 in., Handle material: 3Cr13, Handle thickness: 12.87mm / 0.51 in