advanced search, by custom meta fields also

I’d like to implement a more advanced search in combination with the already buildt in one.

For every post I’m gonna add custom fields, such as “price”, “location”, “expiration date”, and I’d like to search for price ranges, date ranges, location string matches.

I came across the resources listed below, but I’d like also to hear your experiences about this topic that I think is pretty common on a site/blog.

Looks pertinet:
https://www.ads-software.com/extend/plugins/wp-custom-fields-search/

Must test if I could combine more search criteria and merge results:
https://www.ads-software.com/support/topic/320247?replies=4