RE: Camel Rides... can't remember how much they cost us, were expensive on Bali standards though. We did the rides at Hotel Nikko at Nusa Dua. It was a bit of fun. It included a little tour of part of the grounds and a stop at a little 'village' and a (hot) fizzy drink with the people that live there... it was something a little different.
Sorry it took so long to answer your question. But hope this helps.