The initial six month trial was estimated to cost £21.8 million in revenue with £6.6 million generated hence the £15 million the Scottish Government assigned to fund the trial; "
https://www.gov.scot/publications/a...rapping-peak-time-rail-tickets-foi-release-2/"
In March this article was in The Scotsman;
"
https://try.yorkshirepost.co.uk/new...aces-transport-secretary-fiona-hyslop-4548827 - ScotRail peak fares suspension: Tricky decision over scheme’s future faces transport secretary Fiona Hyslop - The suspension of
ScotRail peak fares has been hailed by transport secretary
Fiona Hyslop as a “bold initiative” that had also simplified ticket buying as she prepares to consider whether to make the discount permanent. More than one million extra journeys have been made on the nationalised train operator since the initial six-month trial was
launched in October. Alex Hynes, managing director of Scotland’s Railway, which comprises ScotRail and track owner Network Rail Scotland, said the pilot was costing the equivalent of £30 million a year compared to its annual fare revenue of £325m, or 9 per cent. He told The Scotsman: “For ScotRail, it’s a significant revenue loss, but it creates fabulous benefits for customers and the economy and society.”"
The quote above implies the £30 million is an annual figure but I have also seen £60 million reported as an annual figure so maybe the £30 million was just the initial six month trial period cost? If you going to trial this it does need to be over a year to get a full picture, I would expect people to use it more during the summer, particularly the school holiday period.