etemplates

Add a buy button anywhere on your WordPress integrated Ecommerce Templates site. Choose a product id, select whether you want an add to cart button or image and then generated the code that can be placed in your blog, home page, sidebar etc.
Please note, the ECT Add to Cart plug-in is only available for Ecommerce Templates shopping cart software WordPress integration.
For more details, screenshots and information please visit <a href="http://www.ecommercetemplates.com/wordpress-ecommerce.asp" rel="nofollow ugc">Ecommerce Templates for WordPress</a>.
Key Features
<ul>
<li>Simply generate the code for an Add to Cart button</li>
<li>Choose between a submit button or image</li>
<li>Define the css class for the submit button</li>
<li>Define the text that will appear on the button</li>
<li>Add straight to cart from your posts, home page, sidebar etc.</li>
</ul>
Notes
Please note that the Add to Cart button will not add product options associated with the product id. If this is required the product + attribute will need to be assigned its own product id through the Alt Prod Id feature in the software. If you need to know more about this feature, please do get in touch.
The ECT Add to Cart plug-in is only available for Ecommerce Templates shopping cart software WordPress integration.
View Demo Store
We have set up a <a href="http://ectwp.com/" rel="nofollow ugc">demo store</a> using the Responsive theme and Ecommerce Templates shopping cart where you will also find a demo of the <a href="http://ectwp.com/plugins/" rel="nofollow ugc">Add to Cart plugin</a>.
Support
If you have any problems with generating the Add to Cart button please post your support questions here on the WordPress support forum. Any questions about the shopping cart or WordPress integration can be posted on the Ecommerce Templates support forum. 
If you have a problem with the plug-in please don’t just give it a bad rating or review without seeking our help first.
Plug-in resources
<a href="http://www.ecommercetemplates.com/wordpress/wp-plugins.asp" rel="nofollow ugc">Plug-in home page</a> – <a href="http://www.ecommercetemplates.com/wordpress-ecommerce.asp" rel="nofollow ugc">Shopping cart home page</a> – <a href="http://ectwp.com/" rel="nofollow ugc">Demo</a>

ECT Add to Cart Button

Add a buy button anywhere on your WordPress integrated Ecommerce Templates shopping cart software site.

wp.insider

wpecommerce

We are deprecating this plugin. You can use the <a href="https://wordpress.org/plugins/wp-express-checkout/" rel="ugc">PayPal Express Checkout plugin</a> which is a simple and lightweight plugin to handle the selling of digital downloads using the PayPal Express Checkout API.
I needed an easy and lightweight plugin to sell digital downloads. I don’t want any kind of bloat in the plugin, so this plugin is not an elephant plugin. If you want to sell digital downloads via PayPal, this plugin will do the job nicely.
WordPress iSell is a simple WordPress plugin to sell digital downloads. It integrates flawlessly with PayPal. User interface (UI) of the plugin is very simple to use, I call this plugin for users, not for developers but developers should not feel left behind. I know how painful it is to modify client’s plugins and then find out after a few weeks or months that they had updated the plugin and boom! all changes are lost. There are filters and hooks for almost every important functionality in WP iSell.
<h4>Sell Digital Downloads Features</h4>
<ul>
<li>You can upload files easily via WordPress media uploader or your own FTP software</li>
<li>You can sell various types of downloads. For example: pdf, ebook, photo, music, video, audio, mp3 etc</li>
<li>Digital downloads are automatically sent to your customer via email after PayPal payment</li>
<li>You can create unlimited products</li>
<li>You can also create custom orders</li>
<li>You can manage products and orders through standard WordPress UI. It feels as if you are managing your WordPress posts/pages. This plugin utilizes the custom post type feature of WordPress.</li>
<li>It works flawlessly with the latest version of WordPress.</li>
<li>It’s a developer friendly plugin. It can be extended by using the proper hooks and filters.</li>
<li>Your digital downloads are served to your customer as encrypted links. It’s not just full links to your files.</li>
<li>Easy File download using PayPal</li>
<li>Upload thumbnails for your downloads</li>
<li>Create a product display box using a shortcode</li>
</ul>
For detailed documentation please visit the <a href="https://wp-ecommerce.net/wordpress-isell-easily-sell-digital-downloads-from-your-wordpress-site-1916" rel="nofollow ugc">WordPress Sell Digital Downloads</a> plugin page.
<h4>Get involved</h4>
Developers can contribute to the source code on the <a href="https://github.com/wp-insider/sell-digital-downloads" rel="nofollow ugc">Sell Digital Downloads GitHub Repository</a>.

Sell Digital Downloads

All in one WordPress plugin for selling digital downloads. It allows you to sell digital downloads via PayPal and manage orders from WP dashboard.

ECT Add to Cart Button vs Sell Digital Downloads