MidGenRefresh
*Refreshes biennially
Actually there are quite a few historical lows, here are some:
When this happens third party stores lower their prices even more, at least on average.
There are always some historical lows, but overall I don't see this sale being any different or better than what we've had over the past four years. Not that I'm complaining, I've never found Steam sales "bad" like people here often do.