Tickets for Premier League leaders Leicester City's final home game of the season against Everton sold out within 90 minutes and are now being sold for over £15,000 ($21,350) a pair.
Leicester are on the brink of a famous Premier League title with the club set to clinch glory if they win three of their remaining five games of 2015-16.
Their penultimate fixture of the season is against Everton at the 32,312-capacity King Power Stadium on May 7, and tickets went on sale on Monday.
Tickets for the game have a face value of £30-£50 ($43-$71) for adults and £5-£15 ($7-$21) for children.
SOLD OUT: Everton tickets sell out to Members in record time - https://t.co/BQG7ctV1T8 #LeiEve
- Leicester City (@LCFC) April 11, 2016
A club spokesman said in the Leicester Mercury: "Tickets for Leicester City's final home Barclays Premier League game of the season sold out within 90 minutes.
"There was unprecedented demand online, over the phone and in-person."
However, the tickets are now being sold for inflated prices on resale websites, for more than £3,000 ($4,270) each and over double that for a pair.
Leicester's spokesman added: "The unauthorised sale of football tickets is a criminal offence under UK law. Leicester City Football Club will take action against any ticket touting or any attempt to resell tickets for above their face value.
"We encourage all supporters to report any such activity to the club."
Some Leicester fans let their frustration at the situation known on Twitter.
@LCFC I understood that there were more seats than gold/family members. How is it possible to sell out? Are real fans losing out to Corp?
- Martin Jones (@joneso76) April 11, 2016
@LCFC @StringerSport please explain how this is possible if every home game this season has gone to silver membership, why not Everton?!
- Matthew Payne (@mppayne27) April 11, 2016
@LCFC The amount of season ticket holders + family/gold members doesn't add up to the full home seated stadium capacity... ��
- K E I R A N (@_KeiranWilliams) April 11, 2016
Claudio Ranieri's Foxes, who are seven points clear of second-placed Tottenham, are next in action at home to West Ham United on Sunday.