Biggest I have seen was while I was working at Million Air in Tulsa. (now it's Mercury) We occasionally had a Antonav come in to pick crap up and head back to Russia. Took us 8 hours and two fuel trucks at once to fuel that turd. Total bill? 43 thousand and change. Wierd thing is, they paid cash.....They also bought 12,000 worth of crap (paid cash too) at Wal-Mart to take back with them.
Items such as Toilet Paper, blue jeans, Little Debbies, tons of medicine, Hallmark Cards, 4 TV's, VCR's, DVD's, Tapes, 3 nintendo sets, socks, underwear, 19 cases of Pepsi and Coke, 3 recliners from the furniture section, about 30 pairs of shoes, 1 Lawnmower etc etc etc
Took me 7 trips to bring all the stuff back to the airplane and a truck to pick up the lawnmower they bought. LOL
That was a fun day.
Catering bill was also in the Thousand dollar range. (Cash as well)