iSell is a free wordpress plugin to sell Digital Downloads in wordpress site.
upload very large files.
Create unlimited products and can also create custom orders
Manage products and orders through standard WordPress UI.
secure file downloads
To install iSell
Login to wordpress (wp-admin).
In your admin dashboard click plugins and select Add New.
Type iSell in the search field and click Search Plugins button.
After the successfully Installation click the activate Plugin link to activate the plugin.
Download iSell wordpress plugin. Download link
Unzip and upload it to your WordPress wp-content/plugins directory.
Login to wp-admin. In your admin dashboard click plugins and activate the iSell wordpress plugin