Eventually, SSDs will become cheap, 1 TB/200 USD and under, one day.... Hopefully, 64-layer flash will take the market to that point.
So far, Intel SSD 545s has been released, in 512 GB and 2.5-in: Newegg
In the works are siblings Western Digital Blue 3D (Newegg) and SanDisk Ultra 3D (B&H)...