CharlyLeetham

Easily embed a fully functional paypal buy now, subscribe or hosted button using shortcodes. Supports Wishlist Member and 
provides integration with iDev Affiliate and JRox JAM.
Copyright (C) Ask Charly Leetham (A Leetham Trust Project) 
This program is free software; you can redistribute it and/or 
modify it under the terms of the GNU General Public License 
as published by the Free Software Foundation; either version 2 
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, 
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
along with this program; if not, write to the Free Software 
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Enhanced Paypal Shortcodes

Diego F. Tomás

This plugin shows in the catalog of the woocommerce store and on the page of each product, a button that allows your client to buy that product automatically and without having to navigate through your website, the client is redirected to the checkout of your store with only the selected product in the cart. After purchase, the content of your cart is automatically added before clicking the “Buy now” button. 
If the customer does not proceed to make the purchase, the cart is filled with the previous items, adding this product automatically. 
This plugin if fully free, ENJOY!

Garber Buy Now Button

This is the plugin that adds the "Buy now" button to your woocommerce store, fully customizable.

Enhanced Paypal Shortcodes vs Garber Buy Now Button