I should have known better, but finally bought the Reformed Diamond upgrade yesterday afternoon. I debated for several days whether to take the $1173 plunge but finally convinced myself to do it. After all, it would cost me $1380 on August 6, right? Wrong. A new sale through September 12, so it seems, at 15% off. I should have known.
Edit: as seen below, I mistakenly confused "base package upgrade discounts" with "base package discounts." I'll leave the forum and get back to studying! 