Its not clear how to reduce the payment - Always high

I understand your frustration with high costs, especially when you're just starting out and have few customers. Let's address your concerns and explore some ways to reduce your AWS costs.

First, regarding LCU (Load Balancer Capacity Units) hours versus regular hours: LCU hours are specific to Application Load Balancers and are a measure of the load balancer's capacity usage. Regular hours typically refer to the running time of EC2 instances or other services. For your use case with a plugin for Adobe video editing software, you may not need a load balancer at all, which could be an area to cut costs.

To reduce your costs:

1. Analyze your usage: Use AWS Cost Explorer to identify which services are costing you the most. This will help you focus your optimization efforts.

2. Right-size your resources: Ensure you're using the smallest instance types that can handle your workload. For a plugin with minimal server access, you might be able to use a smaller, less expensive instance type.

3. Consider serverless options: For intermittent workloads like yours, serverless options such as AWS Lambda might be more cost-effective than running a constant EC2 instance.

4. Optimize your database usage: Regarding your two databases, you could potentially consolidate them into a single database with read replicas if needed. This would likely reduce costs. You can always scale up or add read replicas later as your user base grows.

5. Use AWS Free Tier effectively: Make sure you're fully utilizing the free tier offerings. However, be aware that some services like Amazon Aurora are not included in the free tier.

6. Implement auto-scaling: Set up your resources to scale down during periods of low usage, which can significantly reduce costs.

7. Consider Spot Instances: If your workload can handle interruptions, Spot Instances can offer significant discounts compared to On-Demand pricing.

8. Turn off non-production environments: If you have development or testing environments, consider turning them off when not in use.

Remember, you can always scale your infrastructure back up as your business grows and you start generating more revenue. The key is to start small and optimize for your current needs while planning for future growth.

If you're still struggling to manage costs, consider reaching out to AWS support or consulting with an AWS solutions architect who can provide more tailored advice for your specific use case.
Sources
Community | Billing and Cost Optimizations Essentials
Community | Billing and Cost Optimizations Essentials
Amazon EC2 billing and purchasing options - Amazon Elastic Compute Cloud
Best practice 14.1 – Evaluate the infrastructure usage patterns and choose your payment options accordingly - Data Analytics Lens