There was this one guy at a convention a few year's back I offered $50 an hour for some simple shit. He agreed, then right at the last minute claimed he wanted $200 an hour AND the content!
I said no and the shoot was cancelled. He then went around the convention "bragging" to everyone that I couldn't afford his "rate"
At night he was bumming drinks and food off of everyone and couldn't afford to stay in the hotel so stayed up the entire last night with his stuff