Dak Prescott's value in dynasty? (1 Viewer)

What value would you put on Dak Prescott in a 12 team start one qb dynasty?

I'm currently sitting on Roethlisberger, Wentz, Prescott, and Flacco.  I took over this team which was 1-12 last year without much to work with (would have to get lucky to even win a single game). With the emergence of Wentz, I feel like I can let either Roethlisberger or Prescott go in a trade.  What have people been getting in return for Prescott?  I might have the Romo owner interested, but he will not part with his 2017 first round pick.  It will most likely be top 5.  Is asking for a second round pick good return on value?  It would most likely be between picks 13-18 next year.

I would prefer not to trade Roethlisberger at this time, but I would move him for a first round pick next year since I'm in a major rebuild.

Thoughts?

I think Dak can net you a 3rd or 4th round pick, but when Romo comes back his value goes down. I honestly don't see anyone giving up a 1st for him, but if you could get a 1st or 2nd I would take it.   Or if you can get an upgrade/youth at another position.

I could see you rolling with Wentz/Flacco.  Maybe dangle Ben out there to see if you can upgrade at another position