Add.app has 50% on their great Audio Design Desk! It’s for both the subscription and the perpetual license! It’s a lot of fun and very useful.
Krotos has 50% on their Audio stuff (Weaponiser, Igniter and Reformer Pro should be very interesting for filmmakers).
UVI.net has 30% off right (Drone, Meteor, Whoosh FX, Walker etc)
Boom Library has a 3 for 2 sale.