We have about 20 of them. In great condition, some of them may just need a nice wipe clean (it lived outside).
 
Here is some more info, pictures and reviews:
https://www.ikea.com/us/en/catalog/products/90184047/
https://www.amazon.com/Ikea-Marius-Stool-Stackable-White/dp/B00GPUJ7VC/
 
Available now. Name your price/ buy it here: https://goo.gl/forms/Yh3Arc9iofRSoosd2