Magento 2 module to add message after products prices
1 => Clone the repository in this path: magento_dir/app/code/Aly/
2 => After clone, in your magento root directory you need run the follow commands:
bin/magento setup:upgrade
bin/magento setup:di:compile
bin/magento s:s:d (If production mode is active)
1 => Go to stores -> configurations -> Product Message -> General
2 => Type your message on the field and click in save.
3 => Flush your cache and you can check the message accessing a product on frontend