The timescale is rather short in the grand scheme of things and SSDs have been massively oversupplied in the last little over a year. We'll have to wait and see how this develops, SSD prices could start to rise if the correct for the oversupply.
3 years ago I paid $280 for an 18TB Easystore this year I paid $200, both were the best deals of the year so I'd say prices are still coming down just more slowly than we'd maybe like.