seeing levels is very important in nego.
If you see a 6* or 7* player (from the seller's view), he 's not gonna sell him unless he has a superb offer of 10 or more tokens.
Many times he 's not for sell, just passing by from the list.
If a player is a 4* player (so useless for his team) , you have good chances to buy him with 2-3 tokens.