ProSim's "Battle Group Commander: Episode One", 12% discount.
Get it from the Shrapnel Games Store. Offer is valid until May 12, 2009.
ProSim's "Air Assault Task Force", 13% discount. Get it also from the Shrapnel Games Store. Offer valid through May 2009.
Also, somebody mentioned to me that you could get an additional 5% off by using the coupon code: FFSAVE5P