With the Bookly Packages (Add-on), you can create deals for a particular service, allowing clients to book their favorite treatment in one package.
Demo: https://codecanyon.net/item/bookly-packages-addon/20952783
Payler - pricing packages & tables is a unique and advance responsive design based on bootstrap v4.3.1. It is built using HTML5 and CSS3 with modern design. You can easily integrate and customize it into your website.
Demo: https://codecanyon.net/item/payler-pricing-packages-tables/26089524
Axies - you can create your own download script where users can download PSD's, Zip files, and any other kind of graphic file from your site.
Demo: https://codecanyon.net/item/packagist-premium-php-packages-download-system-with-website/26624100
This plugin is an add-on that requires the Rezervy installed and activated. Rezervy POS (Point Of Sale) add-on provide additional feature to add new sale of service.
Demo: https://codecanyon.net/item/rezervy-point-of-sale-system-for-services-products-packages-multi-payment-management-pos-addon/32280111