db.x2g.12xlarge is an Amazon Neptune size with 48 vCPUs, 768 GiB memory (AWS Graviton2). In US East (N. Virginia) it costs $13.132 per hour on demand ($9,586.29 per month) for Standard storage. It is sold in 6 regions.
Prices by region
USD per hour, Standard storage. Reserved prices are no upfront, standard. Cheapest on-demand first.