While Costco can be a great place to buy lots of things but we do feel it is not the best for Nutribullet. The reason is simple, there is just one model available with the store where there are several models of Nutribullet available with other portals such as Amazon.Also, we were not able to find any replacement parts available. So if you are looking for them you will be disappointed too. So overall, while Nutribullet is available with Costco, it is a just single model and no replacement parts are available and that too only for members. We would rather recommend buying your Nutribullet from Amazon instead.