Standard_EC4ads_v7 is an Azure VM size with 4 vCPUs. In East US it costs $0.399 per hour on demand ($291.27 per month) for Linux. Spot capacity is about $0.0798 per hour. It is sold in 7 regions.
Prices by region
USD per hour, Linux. Reserved prices are no upfront, standard. Cheapest on-demand first.