Talk:RR3 Wiki:Upgrades Strategy For 100% Completion/@comment-208.184.141.147-20160621161219/@comment-26249703-20160621162401

Correct, but the price to get to PR:89 isn't. Hence:

Ford PR:90 and Ferrari PR:89 = (567+270)+552 = 1,389 Gold

Ferrari PR:90 and Ford PR:89 = 567+(552+285) = 1,404 Gold