Sleeper Tickets going Cheap! - for travel between Scotland and London +

I have four unused FIRST CLASS sleeper service tickets that must be used by 14th June 2012, including travel on that date. They are open tickets with no specific dates on them. They are valid between mainline stations in Scotland and London Euston, in either direction - ideal if you and a friend fancy a quick trip down south and back in the next few days. They originally cost 105 each, but I will accept 50 each, or 175 for all four. The tickets are located in Aberdeen and can be collected. Feel free to call me for more information.