Amazon has the SanDisk Ultra 256GB microSDXC UHS-I Memory Card (SDSQUAR-256G-GN6MA) for $72 with free shipping. Has excellent Amazon Reviews.
Amazon has the Crucial MX500 1TB 3D NAND SATA 2.5" Internal SSD- CT1000MX500SSD1(Z) for $174 with free shipping. Sequential reads/writes up to 560/510 MB/s and random reads/writes up to 95k/90k on all file types.
Has excellent Amazon Reviews.
eBay has the 1TB Mushkin Enhanced Reactor 2.5" SATA III MLC Solid State Drive (MKNSSDRE1TB) for $160 with free shipping. Retail price: $260. Features 1tb,interface: SATA 3 (6gb/s), silicon motion controller - sm2246en, max shock resistance 1500G, max read: 560mb/s; max write: 460mb/s, 4Kb random read / write: up to 74,000 / 76,000 iops.
Has excellent Amazon Reviews, where it sells for $178 with free shipping.
Amazon has the SanDisk SSD PLUS 240GB Solid State Drive (SDSSDA-240G-G26) for $50 with free shipping. Retail price: $110. Features faster boot-up, shutdown, application load and response, up to 20X faster than your old hard drive, read/write speeds of up to: 530MB/s/440MBs, generous battery life, cool, quiet operation.