If you need a cheap e-commerce site, remember the WooCommerce. WooCommerce has too many plugins and options. One of them is WooCommerce Dynamic Pricing.
With this plugin, you can configure bulk discounts for each product in your WooCommerce store by creating a table of quantities and discount amounts.
Plugin Dynamic pricing is for sale in official Woocommerce site. You can buy it there.
However, the plugin is also published and ready for free download in one Git repository – there. And as they said, the repository is just a mirror of the WooCommerce Dynamic Pricing plugin.
1. Upload the folder ‘woocommerce-pricing’ to the ‘/wp-content/plugins/’ directory
2. Activate ‘WooCommerce Dynamic Pricing‘ through the ‘Plugins’ menu in WordPress
How to use Dynamic Pricing plugin:
1. Edit a product and look for the ‘Dynamic Pricing‘ tab.
2. Configure the dynamic pricing options for your product. Enter numerical values in the From and To fields. To allow an unlimited number, use the * symbol.