With Elastic Load Balancing, you only pay for what you use. You are charged for each hour or partial hour your load balancer is running and for each GB of data transferred through your load balancer. You will be charged at the end of each month for your Elastic Load Balancing resources actually consumed.
As an example, a medium-sized website running on 10 Amazon EC2 instances in the US East (N. Virginia) Region could use one load balancer to balance incoming traffic. If the load balancer ended up transferring 100 GB of data over a 30 day period, the monthly charge would amount to $18 (or $0.025 per hour x 24 hours per day x 30 days x 1 load balancer) for the load balancer hours and $0.80 (or $0.008 per GB x 100 GB) for the data transferred through the load balancer, for a total monthly charge of $18.80. Partial hours are billed as full hours. Regular Amazon EC2 service fees apply and are billed separately.
For more details on Elastic Load Balancing pricing in GovCloud, visit the GovCloud pricing page.