Silicon Power S70 120GB Solid State Drive for $49.99 shipped. Here is a screenshot for reference. It features up to 557MB/s read speed, 507MB/s write speed. Note that according to the description, it uses the higher-end and usually more expensive toggle/ synchronous type of flash, which usually appear in higher-end SSDs that are much more expensive than this. As with other SSDs, there are no moving parts so it is completely silent when running.
This deal has expired. Congratulations to those able to get in on it.