intellasoftsolutions

The IntellaSoft Coupon plugin lets you create coupons that you can display on any page or post via shortcode. The coupons can be individually colorized.

Coupons

The official IntellaSoft Coupon WordPress plugin.

noadpl

This plugin is for making a widget with paypal balance (but it needs only a little edit to have all pp api options) 
you can use 4 tags for now [percent] [balance] [currency] [goal] i thint those no need comment 😛 [percent] = (balance / goal) * 100% 
I leaved option to put all html in display field, you can put any tags here
I created this plugin under WordPress 4.5 but code is simple so it should work with older versions.
This plugin no need translations becouse you can use html tags free in “display” section use html5 tags or own css classes to display whatever you like

NoAd.pl Paypal Widget Plugin

Display a customizable widget on your site with informations from your PayPal.com. Make goals and progress bars to keep informing your visitors live.

Coupons vs NoAd.pl Paypal Widget Plugin