WooCommerce Bulk Discount makes it possible to apply fine-grained bulk discounts to items in the shopping cart, depending on the ordered quantity and on the specific product.
You can find the plugin here:
Now go to add product under products tab and create a product.
Now go to the front end of your site and look for the product on which you have applied the deal and click on that to be directed to single product page.
Here your deal’s details will be listed (if any provided).