So, how much is a 39 year old Aaron Rodgers worth to trade?

If he were ten years younger he'd probably cost at least three first round picks. But he's not, and the best case scenario would probably be to get three seasons out of him. For that, I would place his value at one first rounder plus maybe a conditional mid round pick or two depending on how well and how long he plays.

That said, for all his talent he's got a toxic personality and I am very much opposed to acquiring him.