ok, im doing this math off of a intel 510 120gb
it comes in at about 2.3$ per gb
i also believe they are on a 25nm process
assuming a silicon wafer costs 50k to produce on its own, and you get about 16gb per chip, 1 wafer 21,739gb
and lets also assume that 10nm is the lowest you can go, just to make the math easier.
moving down to a 10nm process from 25nm would yeild 5.25 as many chips, and if lets say 5nm were possible, you would get about 24 times as many chips,
now lets go best case scenario here.
10nm preice per gb would be .44 cents a gb
and at 5nm, price per gb would be .9
these processes are a good 5-10 years out minimum, unless extreme demand for ssds kicks in, but currently hdds, pre flood, were 3.5 cents per gb, and takeing floods out of the equation, that number is only going down.
if i knew the size of a 16gb chip, i could figure out about how much of a premium ssds have, and see how much they could cut, but im doubting anyone has that information.