The listed price is for a purchase of four items. If you purchase only one, the price is 500 yen. These are Pigeon's Breastfeeding Real SS size nipples. I used them for about two months in rotation, and they are in good condition, I think. *Please understand that these are used items before purchasing. *After taking the photos, I have washed and sterilized them, but please wash and sterilize them again before use. I will respond to both individual sales and bulk purchases. Please feel free to ask any questions or negotiate the price in the comments section. ^ ^