cache.t2.small is an AWS ElastiCache size with 1 vCPU, 1.55 GiB memory. In US East (N. Virginia) it costs $0.034 per hour on demand ($24.82 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.