about 1 year ago - Blitzkrieg Wulf - Direct link
@OP As pointed out above my post, I think you may be comparing across game modes, which have different repair costs.

F-84G (US): 10,800 - 14,500 (min/max, WT wiki)
F-84G (CN): 9,000 - 12,000
F-84G (IT): 10,000 - 13,300
F-84G (FR): 10,600 - 14,200

Yes, china has the lowest repair costs, min-for-min/max-for-max in this instance- But also keep in mind that the efficiencies are going to be different between nations, which will play a part in shifting repair costs.