cache.m4.10xlarge is an AWS ElastiCache size with 40 vCPUs, 154.64 GiB memory. In US East (N. Virginia) it costs $3.112 per hour on demand ($2,271.76 per month) for Redis. It is sold in 14 regions.
Prices by region
USD per hour, Redis. Reserved prices are no upfront, standard. Cheapest on-demand first.