Supply & Advise, a heritage-styled menswear shop in Miami, has some great basics on sale right now. You can take an extra 30% off already-discounted items in their sale section with the checkout code EXTRA30.
That yields some great deals. Check out these these Left Field raw denim jeans ($61), Shuttle Notes Western shirt ($68), washed-out Gant Rugger denim shirt jacket ($65), Eidos polo ($68), and Orlebar Brown swim trunks ($80). There are also tons and tons of Gitman Vintage shirts in there. This linen striped spread collar shirt, for example, gets dropped to $63 (down from an original price of $180).
You can see the sale section here.