Ironicially it's a completly different story on the consumer market. I bought my two 4GB sticks about 2 years ago and now they cost twice as much. 4GB can cost you $40 which is not cheap at all.
That's totally negligible on the cost of the rest of the machine. Imagine $160 will get you 16G!! That's an absolutely enormous amount of memory, most power users would be more than satisfied with that.
Not all that long ago that amount of RAM would cost more than a brand new mid sized car.
Ironicially it's a completly different story on the consumer market. I bought my two 4GB sticks about 2 years ago and now they cost twice as much. 4GB can cost you $40 which is not cheap at all.