My dad was a college referee for softball and basketball (D1-D3 softball), D3 and high school basketball. made good money but definitely had a full time career. He was even the assignor for high school and college softball in our area and that wasn't fully paying the bills. Most of these guys have other jobs. 30x2.5k isn't exactly payingg for their kids colleges
Yeah, I ump high school baseball and softball and know some guys that do college ball. Mostly junior college, D-3 and lower level D-1. They all have other jobs, and with all the travel they do during the season it doesn't seem worth it to me.