We provide refunds if the plugin does not work on your site, and you gave us a chance to fix it (support is included in the Premium Plugin).
We do not provide refunds if you simply decide not to use it after purchase. The reason is that software products can easily be copied and not really be ‘returned’. We do not have any influence over what is done with the plugin after it has been downloaded. If we offered refunds in those cases, it would be possible to purchase the plugin, claim a refund, and keep using it.