A study by Swiss research group CIES Football Observatory has found that Brazilian star Neymar is worth €28.4m (NZ$46.3m) more than what was paid for him by French club Paris Saint-Germain.
The research company specialises in the scientific estimation of a player's value in the football transfer market.
Their newest data release ranks the footballers from Europe's big five leagues - Premier League (England), La Liga (Spain), Bundesliga (Germany), Serie A (Italy) and Ligue 1 (France) - based on whose transfer value has increased the most since July.
The study shows that the transfer value of Neymar, the world's most expensive footballer of all-time, has augmented to €239.6m (NZ$$390m), a €28.4m (NZ$46.3m) increase on the fee that Ligue 1 table-toppers PSG paid for him to leave La Liga leaders Barcelona in August.
Since his transfer from the Catalan giants, Neymar has flourished in the French capital, averaging a goal per game in eight appearances for the six-time Ligue 1 winners in both the French league and in the Champions League.