Parts cost change ALL the time. I paid around $85 for 16gb of 1600mhz of ddr3 about 3 months ago. Now I think the starting price is going to be around twice that for the same stuff. Given it was on sale when I bought it. G. Skill Ripjaws X is probably the best bang for the buck if you're actually looking to buy right now. Other things to take into consideration are if you're using an AMD CPU or Apu or an Intel. The reason I say that is that AMD CPU's don't really benefit from faster memory where as their APU's do A LOT as with intel's. I'm sure that's more info than you were looking for, but to sum it up the difference between $80 memory and $100+ memory is small. But the difference between $60 memory and $80 memory is a lot bigger when it comes to benchmarking and cooling solutions. Also 2x4gb memory is better than 1x8gb of memory due to dual channel useage, unless of course you only have one ram slot which is unlikely these days, and not even usable by some older OS's.