c9g.metal-48xl is an AWS EC2 instance with 192 vCPUs, 384 GiB memory (AWS Graviton5 Processor). In US East (N. Virginia) it costs $8.346 per hour on demand ($6,092.73 per month) for Linux. Spot capacity is about $2.023 per hour. It is sold in 8 regions; the cheapest is Asia Pacific (Malaysia) at $8.149 per hour.
Prices by region
USD per hour, Linux. Reserved prices are no upfront, standard. Cheapest on-demand first.