It may seem as though clubs in the English top flight are spending more than ever during the current window.
Manchester United are expected to smash the transfer record and complete a £112m deal for Paul Pogba in the coming days.
But big moves of the past were worth bucketloads of cash when inflation is taken into account.
So which switch is technically the most expensive in the history of the Premier League?
The answer may surprise you!
Click through the gallery above to see the 20 biggest transfers in Premier League history, with inflation taken into account.