cache.t2.medium is an AWS ElastiCache size with 2 vCPUs, 3.22 GiB memory. In US East (N. Virginia) it costs $0.068 per hour on demand ($49.64 per month) for Redis. It is sold in 18 regions.
Prices by region
USD per hour, Redis. Reserved prices are no upfront, standard. Cheapest on-demand first.