db.r6g.8xlarge is an Amazon Neptune size with 32 vCPUs, 256 GiB memory (AWS Graviton2). In US East (N. Virginia) it costs $5.284 per hour on demand ($3,857.47 per month) for Standard storage. It is sold in 28 regions.
Prices by region
USD per hour, Standard storage. Reserved prices are no upfront, standard. Cheapest on-demand first.