Samsung 970 EVO 500GB SSD | $80 | Amazon
Samsung makes some of the best solid state drives around and this Samsung 970 EVO m.2 SSD is currently marked down to $80.
It bears repeating that SSDs are a huge upgrade over a spinning hard drive for your computer, in terms of speed and reliability. This 500GB model offers read speed up to 3400 MB/s and write speed up to 2300 MB/s. This is also the easiest way to get more performance from your older computer.
This is the lowest price ever offered by Amazon.