Do i need any additional plugins to use WooCommerce Wholesale Pricing?

The only plugin you require is the latest version of WooCommerce which you can download from here.

Where can i purchase WooCommerce Wholesale Pricing?

The only place you can purchase and download WooCommerce Wholesale Pricing is currently from Envato’s CodeCanyon Marketplace. You can purchase the plugin here.

I am having issues installing or setting up WooCommerce Wholesale Pricing.

Please follow the documentation found here. If you are still having issues, please create a support ticket here.

I have wholesale customers with different discounts, can i add multiple levels of wholesale costs?

As of WooCommerce Wholesale Pricing v2.0.0 you can now set wholesale prices per WordPress user role enabled on your site.