Sounds like an "inside job" or some shady neighbors who had their eyes on the prize. I'd pay close attention to those who still come around and act friendly/pretend to act upset that this happened to you. Also, hope your insurance company works with you. I'd agree with the others and give them the replacement cost, not the value of the used parts on the "market". If they don't like your valuation, they will counter-offer. Keep us posted!!!