A technical glitch has been blamed after first class train tickets between two towns 64 miles apart were reportedly being sold for £10,000.
The price is said to have been quoted for a ticket between Taunton and Trowbridge, to travel on June 20 - £9,987.30 more expensive than the standard class fare.
It means anyone forking out for the ticket would pay around £156 a minute for the trip.
Screenshots of the error have been shared widely on social media.
The online ticket seller the Trainline said it gets its fares from Great Western Rail, and the error was being removed.
A Great Western Railway spokesman told the Wiltshire Times: "We are aware of an IT glitch which has published fares for a first class journey that does not exist.
"We are working to remedy this as soon as possible."
On the Trainline, the glitch now seems to have been fixed - with no first class tickets available for the journey, and standard singles selling for £12.70.