Confirmed, this is not repeatable. When you talk to Doopy you will complete all of the bone quests you have taken all at once. Individual reward windows for each one. I would not rate the money reward as "Disapointing (4)". It is about double what other quest this level give me.
The 2nd set of bones I had was useless. No Value, No Trade. Best just to leave them in the chest so that someone else can get them. Or better still, /ooc what bone it is and ask if anyone wants the /loc for the chest.