How to display the right price in homepage when quantity is 0

[MFpres9]

Hi everyone, 

that's my first post here so I hope I'm not messing with topics or anything.

I've got a problem: when the quantity of a product reaches 0, the product is displayed on the Homepage having price = 0,00. 

I wanted to know if it's possible to change that, by displaying the right price and a ribbon or image saying: "SOLD OUT" or something similar.

I already read posts about that topic, but they referred to older versions of Prestashop (I'm using 1.7x) and my product-list.tpl is different, not having lines about price.

I'm using Classic theme, and the version of Prestashop is 1.7.3. 

Thank you for your help!