what is the minimum or maximum repair cost have you experienced

[lkchris]

$319 to work on window regulator + fix up mud flap. Turned out I didn't need a window regulator, just removal of a plastic For Sale sign that had worked its way into the door, causing a big clunk whenever I raised or lowered the window. It seems expensive because it was essentially nothing and I now have to live down being reminded of it.

Of course the recent $2700 for new water pump and new oil cooler for my Mercedes is off topic. (Oil cooler is in vee of engine underneath intake manifold)