As Shapiro said, you can put a dollar value on a comp pick. This is factored into any contract analysis. I trust that Shapiro would only go after someone like Gallardo if he was reasonably certain the value was there, and in this case, he probably has a taker for Dickey lined up. Gallardo at something similar to Happ dollars is not a terrible investment. Gallardo is an 8-time 2 WAR pitcher, that ain't bad. Anybody who thinks that Estrada or Happ is a safer bet to put up 6 WAR over the next 3 years is in denial.
Only if he shaves that f***ing beard and rat tail tho.