The German TransferMarkt (TM) is a famous soccer portal with more than 2 million daily visitors and multilingual support in English, German and Spanish. TransferMarkt focuses on soccer transfer market information, with players' information recorded by data researchers from all over the world, constituting an authoritative database of players' backgrounds, transfer information, prices and other information. The player price information provided by the transfer market website is a more authoritative source for estimating player prices by the major media.