Sources connected with the case tell TMZ ... Alan Shifman (aka lawyer #41) claims he racked up a $163,000 fee for work performed between October 15 and November 15, 2010. He left the case after feuding with lawyer #39.
We're told Shifman is asking Mel to pay $600 an hour -- that means he worked about 272 hours during the month ... which translates to 9 hours a day, 7 days a week.
As we previously reported, Oksana's attorneys have asked Mel to pay more than $1 million in legal fees.
For Mel, it's even harder to swallow than a Ricky Gervais monologue.