Almost free means that the 12.5% extra cost for memory chips may mean 10% extra manufacturing cost for the memory modules and that may mean less than 5% of the

Almost free means that the 12.5% extra cost for memory chips may mean 10% extra manufacturing cost for the memory modules and that may mean less than 5% of the total cost of a computer with 64 GB DRAM (not counting monitor, SSDs and other peripherals, which would drive the percentage to be much lower) and even less for computers having less memory.