There’s no one size fits all unless the couple doesn’t care (and just wants it cheap). Most couples want the day to reflect their unique desires. That means custom service & products. For example, a 6 hour wedding in Dallas won’t cost the same as a 6 hour wedding in Italy because more traveling compensation would be involved. Vendors can’t list every unique scenario on their website, it would become an encyclopedia and overwhelm people. That’s why many share a starting rate or the price range.