here's an update on my experiences with skyauction. i have a short notice trip to london from SFO. the on-line bus class fare is around $6,000 and up but thru skyauction i got a bus class r/t from usa to europe for $2,000. they have been slow to respond with flights i want. their first offer was to go to LGW instead of Heathrow and make a stop in MSP. so far, i am very happy with the price, but i am still working on the right flight.