Customise the displayed price on listing cards to be filter via FacetWP plugin

Hi, Currently i'm listing the items on the website and i'm linking these listing cards with Woo Commerce bookable products so that it can display the price for each listing. You can see in the photo that listing cards displaying a price on it. "From $30", "$50",... And for the listing that are linked with Woo commerce products, FacetWP can filter these listing by Price. However, some price value on the listing cards are just for show, by saying this i mean, I hired a web developer last time to display the price value from xml file without linking the product for each listing manually (purpose was just to save time). and the problem is because the price for some of these listing cards are just for show, so it cannot be filter on FacetWP by Price ! I am looking for someone to help me customise the displayed price on these listing cards that are not linked to Woo Commerce products to be filter as well by Price via FacetWP. 1st photo: listing cards displayed 2nd photo: backend captured of listing card content Let me know if you have good knowledge about FacetWP, Woo Commerce and theme customisation, otherwise it will be a waste of time for both of us. Thank y