Samsung Evo 1TB SSD was going for about $340 for close to 2 years (maybe more?) dipping to $320 around Black Friday last year,
Between Black Friday and XMas of this year (2016) Amazon had it for $249.
Now Amazon has it for $328, NewEgg for $319. So except for the holiday sale at Amazon - prices are currently lower that they've ever been.
Haven't been reading up on this so I can't talk about projected trends, etc..
All I know is if demand is going to kick up, prices will kick up, factories will tool up, market will eventually saturate, and then prices will fall, probably to much lower than they are now. Just like they did for big screen TVs, but you probably don't want to wait the one, two or more years before that happens.