Edit Pro Sites - Table Selection Description

Edit Pro Sites - Table Selection Description
I want to change: Try it out (text), You can easily upgrade to a better value plan at any time.

And i have searched all day in the support forum, but no one seems to answer honestly, like not trying to giveaway the tips for this.

Maybe the pricing table could be changed like Wix.com has it.
I just could add some description using this:

add_filter('psts_checkout_grid_levelname','my_checkout_desc',10,3);

$psts_level_description['1']="<div class='psts-desc'>No Advertising<br />
          											Customer Support<br />
          											Premium Apps<br />
          											Add Favicon<br />
          											Google Analytics<br />
</div>";
$psts_level_description['2']="<div class='psts-desc'>No Advertising<br />
          											Customer Support<br />
          											Premium Apps<br />
          											Add Favicon<br />
          											Google Analytics<br />
</div>";
$psts_level_description['3']="<div class='psts-desc'>my descriptive text 1</div>";

function my_checkout_desc($data,$level,$blogid) {
  global $psts_level_description;
  $output = $data;
  $output .= $psts_level_description[$level];
return $output;

}