It's no secret that nowadays the amount of money pumped into football by various club owners is extraordinary. But, it's always interesting to know just how much they would have to take out of their wallet for the signatures of the very best players.
Here, we take a look at the values of the ten most costly players in the world at the moment, with the prices taken from Transfermarkt:
10. Sergio Aguero | Manchester City | Value: £39.5m
A sublime talent, Manchester City have a player who will be at the top of his game for years. We are yet to see the best of him this season, although the whole team hasn't really performed well enough. But we really saw what he could do last term.
9. Edinson Cavani | Napoli | Value: £39.5m
A world-class player, the Uruguayan has been in sensational form for Napoli over the past two-and-a-half seasons, scoring an impressive 97 goals in 131 matches.
8. Hulk | Zenit St. Petersburg | Value: £39.5m
Blistering pace and a rocket shot on him, it's no surprise that mega-rich Zenit snapped the 26-year-old up after a great spell with Porto in Portugal. He may have failed to live up to his price tag in Russia, but he remains an excellent player.
7. Neymar | Santos | Value: £44m
Just 21-years-old, £44m is a staggering value for someone still developing. When you see clips of him, however, you begin to realise why he's worth that. A massive prospect for the game, the next year is a very big one in the life of this rising star.
6. Cesc Fabregas | Barcelona | Value: £48.5m
He was always set for great things when he was playing for Arsenal at 16/17 years of age. With all of the traditional attributes expected of a Spaniard - technical perfection in other words - Fabregas is a supreme midfielder.
5. Radamel Falcao | Atletico Madrid | Value: £53m
A phenomenal goalscorer and everything you want in a number nine. The Colombian has proved his worth on the biggest of stages, including the 2012 Super Cup against Chelsea, who he scored a first-half hat-trick against.
4. Wayne Rooney | Manchester United | Value: £57m
It was unquestionable that this Liverpool-born striker would have a sparkling career ever since he blasted the ball past David Seaman in the Arsenal goal when he was still just 16. Able to play in virtually any position on the park, Rooney is a credit to both club and country.
3. Andres Iniesta | Barcelona | Value: £61.5m
Quite simply majestic. A first touch and dribbling ability to die for, Iniesta is just astonishing and is vital to Barcelona and Spain's successes, popping up with important goals as well as being an all-round terrific midfielder.
2. Cristiano Ronaldo| Real Madrid | Value: £88m
The image of a modern-day footballer - a superstar. Great physique and electrifying speed, Ronaldo has it all - and is officially the most expensive player ever after moving from Manchester United to Real Madrid for £80m.
1. Lionel Messi | Barcelona | Value: £105m
Just an astounding value for an astounding man. Not the tallest of people, the Argentine has showed height really does not matter in football. Messi breaks records for fun, and became Barcelona's top goalscorer at just 24-years-old. The list of achievements is endless, and the admirably modest four-time consecutive winner of the Ballon d'Or is deservedly worth the most amount of money
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