I never see the william hill offer. I will sure grab it if I come across
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No 1 could give you a decent figure but it will definitely be cheaper then personal training. You have to factor in whether the player is a slow normal fast or very fast trainer . Also the 75 skill points is require during the player transition from which star ? skill progress will definitely be fast if its 3 to 5* , 5 to 7* will be slightly slower 7* to 9* will be turtle speed. So no one can give you an exact figure.
Looks like this (Matomy)
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