In one of my worlds, a trade just went down that involved more cash than the total salaries of every player in the deal. At first glance, it was an even trade. One stud going in each direction, one above average player going in each direction, along with one career minor leaguer going in each direction. But then one owner included $2M in cash.
The owner receiving the cash actually tried to work out this same trade with me a day or two earlier, saying that he needed the cash (it was $3M when he was talking to me) so he could sign a certain free agent. Ridiculous.