I just posted a thread in Digital Photography Workflow on some short-term sale prices from Adobe. I don't know what's new in Elements 13 but there are often good things introduced.

Since I already have PS CS6 and LR, I haven't seen much to tempt me in CC, but others may differ. Although PS is the ultimate digital darkroom tool, that niche isn't a strong focus of PS. It increasingly leans toward "creative content" for internet ads. (The new "art"?)