Yes, something reduced in price in Scotland! They’re not that tight, you know. Specifically this is of use if you’re using Glasgow Prestwick Airport. It’s apparently the only airport in Scotland with its own train station and it’s making the most of promoting this. As far as I’m aware this is a permanent offer.

Anyone flying to or from Prestwick is entitled to half price rail travel to/from the airport.  In the case of new routes (those under 6 months old), this offer is improved to free train travel. At the time of writing this includes anyone flying to/from Cork, Poznan, Tenerife, Malaga and Faro. The other train station involved in your journey must also be in Scotland.

Rail travel must be booked in advance by taking your proof of travel (booking confirmation with your name on) to a First ScotRail booking office where you’ll be issued with the relevant ticket. You can only travel on the dates of your flight except where this is imposible (e.g. if you have to check in at 4am, then you can travel the previous night to arrive at Prestwick on the last train).

More details are available at the airport’s official page.