This 3 piece set of thin awasedo toishi are sold at one price. Included are from left to right: 
#222 Nakayama kiita 180mm long x 56mm wide x 5mm thick
#872 Narutaki asagi 150mm long x 54mm wide x 10mm thick
#773 Shobudani asagi 154mm long x 45mm x 11mm thick