Top player = Aguero, Messi, Cristiano, Ibra, Suarez, RvP, Rooney, Iniesta etc.
Star player = Higuain, Benzema, Tevez, Ozil etc.
Starlet player = Sanchez, Jojo, Lewandowski etc.
Sanchez is at best, a top prospect. His high price is because of his initial purchase price amd the fact that you are paying for his potential rather than the guarantee of him performing for you. Paying 27m for a player like that would be so at a fairly inflated rate. Jojo falls in the same category in many ways and would command a high price for much the same reason. But for my money, neither of them is worth the risk IF a player like Suarez or Ibra is available and willing to take a salary in the region of 7m. I know it's a big if.