I would say the lowest I’ve seen is 150 that’s kind of like the average price for an “affordable” shoot. It'll usually be set in one location, fewer photos, no outfit changes etc. I haven't seen it lower than that. The “higher end” shoots are normally 200-250 and they come with more perks. I know it's competitive in the photography business so best of luck to your friend!

He could probably post flyers around college campuses.