I'm in the opposite situation (considering trading Crawford and really need pitching).
I can tell you finding the right value for Crawford will be difficult.
For me, it goes like this:
Pre-Season Value: He was worth a Top 35-40 SP
Now: Top 20-25 SP
Mid-May if he's still looking like vintage Crawford? Top 15 SP (10 if your team is desperate for runs/speed/OBP)
Is that too much? Maybe, but most Crawford owners got him cheap. It's house money and a stock with a chance to rise rapidly by doing what he's done his whole career except for a little over one season in a very different situation.
You take the chance on his value rising or, at worst, don't get much out of player you paid nothing for. You don't trade him less than he might be worth.
I have offers to get Peavy or Gallardo for him. I'm holding off. Maybe dumb, but I'll hold and see if I can get better in a couple of weeks. And this is coming from someone in desperate need of pitching and that also owns both the rich man's Crawford (Ells) and the poor man's Crawford (Marte).
10 team 5x5 ROTO (OBP), 11-player keeper, C/1B/2B/3B/SS/MI/CI/IF/5OF/UTIL/8SP/3RP
C: Castro, Montero
1B: Rizzo, Adams, Lind
2B: Kinsler, Kipnis
3B: M.Cabrera, Frazier, Reynolds
OF: Stanton, Trumbo, Choo, Marte, Rasmus, Blackmon, Bradley Jr.
SP: Gio, Scherzer, Ryu, Cashner, Kuroda, Lackey, Minor, Wood, Peralta
RP: Balfour, Perkins, Nathan, Frieri, Fields