No, he means the money that we paid to bring Amauri and Martinez to Juve.
Secco paid 22.8m eur for Amauri while Marotta paid 12m eur for Martinez. If we swap them for Vargas it will seemingly be like paying 34.8m eur to get Vargas.
Of course, if we go by their realistic or market value, that's gonna be, more or less, like paying 15m eur for Vargas.