Apparently prices of DDR ram are going up. What brand ram did you buy? There's this one brand named 'crucial' that's kinda cheap. They have a 8gb stick for 65$, but it also looks like something from the 2000s xD
I wanted to get the "HyperX Savage Noir 4 Go DDR4 2400 MHz CL12", which was priced at 34€.
In comparison, all the other RAMs were worse in speed & latency and more costly. (at 40€)
Sadly, it was out of stock so i settled with a "G.Skill RipJaws 4 Series 4 Go DDR4 2400 MHz CL15" for 40,5€.
I only took one stick of RAM. (more RAM would be nice... but they are expensive so i'll wait)