partsfan > part info
31506-31X02
RING-SNAP
RETAINER-SNAP,GOVERNOR
etc... 
Proper price
JPY 370 (excluding tax)
 
JPY 400 (including tax)
 
USD 3.33 (rate $1=¥120 , including tax)
PriceImageProduct TitleShop NameWebsite 
search part number.