I developed this plugin in 2022 following a personal need. It allows you to build different renewable formulas for a product or service in 2 currencies and with prices according to the frequency for each formula (monthly, quarterly, semi-annual, annual). You will also find CSS customization options.
This plugin requires ACF Pro and allows you to set up comparative plans very quickly. This plugin is limited and may evolve. When activated, it automatically creates a group of fields and an options page.
Do not hesitate to leave a comment for any comments or suggestions.