B&H Photo Video offers the Samsung 500GB 960 EVO M.2 PCI-Express Internal NVMe SSD for $199.99 with free shipping. (Amazon, Newegg, and Samsung charge the same.) That's the lowest price we could find by $25, although we saw it for $4 less in August. It features read speeds of up to 3.2GB/s and write speeds of up to 1.5GB/s.