SEATFROG has partnered with Virgin Trains to offer auctions for rail upgrades.
The Australian mobile bidding platform will allow passengers to bid for First class upgrades right up until departure.
Auctions for First class seats open two-and-a-half hours before departure and cost as little as 5.
Some services will also have an instant “upgrade now” option.
The free application can be downloaded from the Apple and Android app stores.