There should be a price for JBJ, and Dombrowski has one.
So far, we know it is more than Edwin Encarnacion and more than Yasiel Puig.
Using fWAR as a guideline, Bradley has been worth 10. fWAR since 2016. That makes him roughly the equivalent of Buster Posey, Justin Upton, Trea Turner, Eugenio Suarez, Kyle Seager and Javier Baez for position players and Zack Greinke, Jon Gray, Chris Archer and Jose Quintana as pitchers. (Also Rick Porcello, but obviously not going to happen.) And there are others fairly close, but I limited the list.
Greinke, Upton and Posey all have long term expensive deals in place, unlike Bradley, which makes them lesser trade candidates, since you have to pay more cash for essentially the same contribution. Seager also has a pretty big deal and isn't having the best year right now, either. But it is for less than the previous ones mentioned.
But would you trade Bradley straight up for any of the others or someone I just didn't mention?