I’ve built several variations of a “Grep” search engine, and it usually stops at “I can’t find a ranking algorithm to go with regular expression searching the i

I’ve built several variations of a “Grep” search engine, and it usually stops at “I can’t find a ranking algorithm to go with regular expression searching the internet”. I say this to highlight that I really wasn’t expecting the pricing model and search method that’s in use here when I heard the site was “grep”