remove the word "each" in product price description

-- url of the page with the problem -- : www.jeweledfrog.com
-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.5
-- PHP version -- : 5
-- Browser(s) name and version -- : firefox latest
-- Error-message(debug-mod must be tuned on) -- : none

How do I remove the word "each" in the descriptor of the product price? Some of our items are "sets of 3" and the "each" does not work for us ... it is best to just remove it completely.

Go to hikashop, configuration, language. Edit your language and add in the Override window the line PER_UNIT=" "
Now a space is displayed.
Default string is PER_UNIT=" each"