The Countdown Offer plugin enables you to add a special widget to your sidebars with a special offer or other information that disappears after a number of seconds.
You can set the duration and enter text or HTML into a box and also display the remaining time before the offer disappears.
There are other options such as showing the offer every time, just once, and you can even reset the cookie if you change your timed offer to enable the visitor to see your new offer.
It’s FREE and setup is done in minutes! 🙂