Kind of a late reply, but to help you out... The lowest it has been digitally was $26.12 back towards the end of December. Deals are far and few between. I got a physical copy after GCU for around $24 back around Xmas as well.
I would imagine steep drops are coming soon. I would be stunned if the collection doesn't have a steep sale around E3 in June. That said, that requires about 2 months of possible waiting.