We did elements and concaves in 06. Updated to a 9770 bullet rotor on 08. Just had to change the first row of 3 element castings. Did Kuchar rotor, accelerator and discharge beater in 09 on the 9770. Had the rotor spin balanced and moved everything to the 680 in 12. Added the 690 clean grain system in 13 which Deere. So I don't have a guess what current pricing would be. Call Gary.