surely his worth is determined by 5 factor's, how good the player is and their age, as well as how important he is to the current team and the length of contract as well as how badly the other team want him?
e.g. you could say no way is a set of speakers worth £7,000 but then there will always be someone out there who really values sound quality who begs to differ.
take a look at Carrol he went for £35m, liverpool at the time must have deemed him to be worth it otherwise they wouldn't of payed that much
We were idiots when it came to buying Carroll soon as they said anything above 20m should have walked. Me personally if we were going to buy bale I'd say 50m but that's due to how market is, he has 1 great season and one good one I think he will get allot better but Ronaldo for example was dominating the league week in week out before he left UTD you could garuntee he would do something for utd every week and he did that for few seasons something bale hasn't but could do maybe with another seasons over here. Just a matter of view though clearly Madrid may think he is at that level all ready I personally dont