i4g.xlarge is an AWS EC2 instance with 4 vCPUs, 32 GiB memory (AWS Graviton2 Processor). In US East (N. Virginia) it costs $0.3089 per hour on demand ($225.50 per month) for Linux; a 1-year reserved instance with no upfront costs $0.2005 per hour, 35% less. Spot capacity is about $0.0709 per hour. It is sold in 8 regions.
Prices by region
USD per hour, Linux. Reserved prices are no upfront, standard. Cheapest on-demand first.