Hi, I was checking the code of one plugin from styleware.eu/store/item/67-performance-booster-for-k2 and suprise what I found is the code use is the same like administrator\components\com_k2\lib\JSON.php they just changed the copyright and call this file in plugin with native joomla function :

public function onAfterRoute() {

require_once (dirname(__FILE__).DS.'json.php');

}

15.00€ this plugin. Maybe it's hard to make a plugin who call a file (lol).

Thank you Clint for reporting this.

We will investigate this from our part, but we are not affiliated in any way with Styleware.