With Amazon Translate, you pay-as-you-go based on the number of characters of text that you processed. It’s easy to get started with the Amazon Translate Free Tier. Translate up to 2M characters monthly - free for the first 12 months, starting from your first translation request.
Amazon Translate provides 200 GB free parallel data storage for every account. Customers pay $0.023 per GB per month for excess data stored.