I'd say that's pretty reasonably priced. Sorry to hear about your troubles though. For anyone else in need of leak detection (slab or otherwise) give us a call.
http://plumberirvineca.org/leak-detection-irvine/
(949) 220-2826
For anyone else in the market. Feel free to give us a try
http://plumberirvineca.org/
(949) 220-2826
24 Hour Services too in case SHTF (I've seen it happen literally :o)
I'd be happy to help you out (this is an old post so maybe help others out who are looking foe the same:
http://plumberirvineca.org/plumbing-repair-irvine/ or (949) 220-2826
Shameless plug here but give me a call. I'll come down and give you a personalize quote and likely beat that price.
http://plumberirvineca.org/water-heater-repair-irvine/