Some sites have lists, so here are two links I keep around to check every few days.
https://bedroomproducersblog.com/202...k-friday-2020/
https://vi-control.net/community/thr...-sales.100595/
Personally, my favorite deal is the sale on
Blackrooster Audio. Plugins for 10-18 Euros each. I already had the VLA-3A and loved that. Picked up the BlackAsh SC-5 and Magnetite for my personal needs. Nice kit and a damn steal at 14 Euros each.