I cant wait till DDR4 prices hit their all time low in September 2016, which for 16GB DDR4 2666mhz was like $65 for G-Skill Ripjaws V(This kit specifically)
https://pcpartpicker.com/product/hCzZxr/gskill-memory-f42666c15d16gvb
I bought this kit two years for Blue Build (2017). For the first time since that date, I can purchase it now for less than I paid for it then. (I wish PCPartPicker saved more than just the last two years worth of price history)
Now I know you can get 3000+ speed for even less than this, but this was one of the cheapest Blue memory sticks at the time.