Caitlyn Jenner is a hotter commodity than Bruce Jenner ever was ... especially on the speaking circuit. Sources who worked for years on booking speaking gigs for Bruce tell TMZ, Caitlyn is worth 5 times what Bruce commanded. Our sources say Bruce used to get $25,000 a pop for motivational speaking ... and they say Caitlyn can pull well over $100k. There's a big reason Caitlyn is a hotter commodity ... social media. Bruce hated social media and wouldn't play ball. A lot of the companies that hire motivational speakers are big into social, and Caitlyn is fully on board and breaking records. Another obvious reason for the bump ... Caitlyn has quite the story to tell.