I got $16.5 per month rate for 1 year of a small (which is 1.7gb).
This is dedicated performance, as opposed to the bad performance of a shared system like openredis, which is $25 a month for a small (200mb). (These systems put artificial limits on things like # of ports, etc. They also share with neighbors as you say, which makes them less reliable in performance - noisy neighbor problem.)
So unless you only need 25mb of cache and have very little load, EC2 is significantly cheaper.
This is dedicated performance, as opposed to the bad performance of a shared system like openredis, which is $25 a month for a small (200mb). (These systems put artificial limits on things like # of ports, etc. They also share with neighbors as you say, which makes them less reliable in performance - noisy neighbor problem.)
So unless you only need 25mb of cache and have very little load, EC2 is significantly cheaper.