Buffett will definitely pay. It's less than 1.2% of Berkshire's cash on hand. And only about 0.24% of Berkshire's book value. Roughly the amount his personal wealth fluctuates each day.
source: http://finance.yahoo.com/q/ks?s=BRK-A+Key+Statistics
source: http://finance.yahoo.com/q/ks?s=BRK-A+Key+Statistics
The question is if I commanded say, $10 billion, could I just as carelessly misplace say, $10,000 as I currently can with $1.
Now I could get gas 3-4 times per week and I wouldn't even notice. I'd imagine if I was worth billions I could easily not notice 10, 20, 30k missing. Then again Buffet is notorious for being frugal so perhaps he would notice.
That 1% figure is the same if you're McDonald's or Buffet, it's just that 1% of their income is a very big number. It's still only 1% though, so it's equally as unimportant to them as your 1% is to you.