$83 Oshlun SDS-0842 8-Inch 42 Tooth Stack Dado Set with 5/8-Inch Arbor – Dado Saw Blades – Amazon.com

decent price for the oshlun dado if you are in the market. seems like it comes into this price range a couple of times a year.
https://www.amazon.com/Oshlun-SDS…B0012YF25Q