You can set your Currency in the /wp-admin/ > Listivo Panel > Basic Setup > Currencies

You can change currency name (e.g. GDP), Currency Sign (e.g. £) and Sing Position (Before / After the number) and Format. The easiest way to find your Currency Sign e.g. £ is searching it in Google and copy / pasting to Vehica Panel (e.g. Search Pound Sign) 

and configure by clicking the edit button:

The new price format will be used everywhere on your website e.g. listing cards and loan calculator