I'd think on a  sub 5000 hour tractor-   it's gotta be  close to the bottom-  Sure,  there's going to  be the odd 'firesale' the dealer will throw out there for  cash flow  purposes.
  But   people trading will be offered less on trades,  so they may just as well keep them for another  season or 2.   There may be a reckoning here soon.  

First and second owners may find it's  better to pay taxes,  than dive into ultra high dollar new iron- just for  depreciation sake.. especially with grains where they are now.


If you GOTTA have it to replace a  dying tractor,     buy it and don't look back. 
 If it's for the sake of adding horsepower;   you've got a realistic base-line now when considering machines. 

Time,  is  on your side here, (to find the non-lemon/dud)  rather than  expecting  lower prices. 
 I'd rather pay  90k for a solid tractor, than 60k  for one on the brink of a  50k repair bill

Happy Hunting!