Just add one more button in a product page AND in a shop page. All plugins add just to product page or change «Add to cart»-button.
I agree. Look at 10 most popular marketplace/ecommerce. All of them have "buy now" button in product page.
Currently all woocommerce "buy now" plugin is useless or cheaply made without going thru research.
This is how real "Buy now" button should work:
-) when customer click "buy now". It will clear all current cart. And continue add the product.
-) when customer click "add to cart". Revert the previously deleted cart. And continue add the product.
This is how ALL woocommerce "Buy now" plugin work:
-) when customer click "buy now". It will add product to cart. It doesn't clear the current cart first.
-) when customer click "add to cart". A usual "add to cart" happen.
See the difference? All big guy on ecommerce doing the "Buy now" button like I explain in the first section. Even shopify also do the same.
But all woocommerce developer doing like I explain in the last section. They are very lazy and took the easy path. And sell the plugin with high monthly price.