EXCLUSIVE
Robin Williams turned down a huge Las Vegas offer 2 years before he died ... and sources connected with Robin tell us it's further proof he did NOT have money troubles .
TMZ has obtained an AEG Live document to Robin ... offering him $600,000 to headline 2 shows at The Colosseum at Caesars Palace.
We're told Robin's people turned the offer down ... he was shooting "The Crazy Ones" at the time. Robin's people -- who have maintained all along money was not a factor in his suicide -- tell TMZ if he was really cash-strapped he would have done some moonlighting in Vegas to rake in some dough.
Under the proposal ... ticket prices ranged from $75 - $150.
