Didn't see this posted...
Currently there is a Sherman Williams 30% off sale [sherwin-williams.com]
for paint and stains until July 4th.
Combine with Coupons for $15 off $60, which can be found here [wayfair.com]
(one time use but you can make more than one, no software install either!)
Used this today and the staff were surprised this worked with their sale event and on HGTV - Ovation brand paint.
You might even be able to get an extra 10% off by being on the Sherman Williams spam list, free to sign up at the store.
Have fun painting!
Edit: fixed link