Manchester United Supporters Trust (MUST) have written to Macedonian authorities to express concern at reports fans are being ripped off ahead of the UEFA Super Cup.
As winners of the Europa League, United face European champions Real Madrid in Skopje on Aug. 8 and each team are expected to take 10,000 fans to the game next month.
A number of United fans had booked hotel rooms in the Macedonian capital in advance. However, there have been reports of hotels cancelling bookings and re-offering rooms at inflated prices.
It has prompted some Skopje residents to offer their spare rooms to supporters of both United and Real Madrid for free in protest.