I once had a $1500 one - Miami (at least then) billed quarterly and when I utterly panicked and hired a plumber they found the cracked main line from the street had been pouring under my parking slab for months.

Didn’t think to, I dunno, call me to ask if I had started a “will fill your Olympic pool for free” business but were happy to knock off 10% when I showed them the thousands of repair bills to fix it.