KFC fans have been left licking their fingers after an astonishingly good deal was spotted meaning burgers were available for just 50p each.
And it was all thanks to an error on its ordering app - seeing customers saving more than £4 on some menu options.
Zinger Tower Burgers usually cost £4.59, for example, but the glitch meant they were being sold for just 50p on Monday.
One customer wrote: "I just bought 20 fillet burgers from KFC for £10.
"I can't believe it!"
Another added: "Go go go, 50p Tower and Zinger Burgers via the KFC app."
Customers took advantage of the blunder in Southend, Essex.
One local spread the word on Facebook and said: "Fast food lovers have been ordering up to 20 chicken burgers each from KFC today, after a glitch in its app meant they only cost 50p.
"The glitch was first spotted today at around 12pm, with KFC fans quickly sharing the news and encouraging others to make use of the slashed price."
Scott Burns bought four and boasted: "A tower of fillet towers.
"£2 bargain."
Jordan Pearson went for 10 and bragged: "Cheers 10 ways! Not bad for £5.50."
Sadly, the error has now been fixed.
A KFC spokesman said: "What an 'appy Monday for some... Our Zinger Tower Burger and Fillet Tower Burger were priced incorrectly for a limited period yesterday meaning a few of our eagle eyed fans got the best Cyber Monday deal going.
"It's all fixed now though - take it up with admin!"
