Yes there are. Unless it had a nice +Life mod, a normal Paladin GC wouldn't trade for anywhere near that amount, so be wary of offers that are to good to be true. You didn't specify the charm though, so I can't say or not if it was a "too good" offer.
well, runes and other items you find, sure dont disappear for no reason
at any rate, sorry about your unfortunate incedent. keep chuggin along, all you can do is carry on and keep moving. ive been thru the exact same thing, so i know exactly how it feels. as soon as you get moving again, youll feel better