Link:
https://www.costco.com/.product.1…_S
One of the best deals for this particular model (very good reviews). You can choose round or elongated shape. Bought one when it was on sale on Woot. Love it. Buying another one for the downstairs bathroom. Valid 8/28/17 through 9/24/17.
This is $20 cheaper than a deal 3 months ago: