Amazon has the Samsung 870 EVO 500GB 2.5" SATA Internal SSD (MZ-77E500B/AM) for $65 with free shipping. List price: $95. Features up to 530MB/s sequential speeds, has been compatibility tested for major host systems and applications, including chipsets, motherboards, NAS, and video recording devices.

Has excellent Amazon Reviews.

Amazon has the Crucial BX500 2TB 3D NAND SATA 2.5" Internal SSD ( CT2000BX500SSD1) for $160 with free shipping. List price: $180. Features boot up faster. load files quicker, improve overall system responsiveness, up to 540MB/s read speeds, up to 500MB/s write speeds. This drive is compatible with desktops and laptops that accept 2.5" 7mm SATA drives.

Has excellent Amazon Reviews.