I always have something to buy & waiting in my shopping carts. I add them to my carts cause I ALWAYS forget what I need when sale days come up. Zoro's doesn't carry everything machining related & they also don't carry everything Grainger does but I do find stuff that I need that comes out cheaper than anywhere else on their flash sales. Their search engine suctions, I search by p/n & do fine.
Got my order in with Zoro this morning for 30%. Also just placed an order with Enco, the 20% + free shipping was cheaper for me than $25% off though as my order wasn't in the hundreds.