The PLAAF are already retiring the J-7E from its units, right? What will happen with this fighters (¿dozens, perhaps?)? They are going to be stored as reserve or scrapped? I think than this aircraft can be sold to countries with very limited budget, and the revenue will come from the refurbishment and support for the aircraft more than the sale of the aircraft itself.
The J-7E/G is still a viable fighter in my opinion, and its BVR capacity is not so limited if the aircraft is properly equipped with the correct radar (using the J-7FS nose) and the correct missile, and above all, deployed with the right strategy.
Greetings from Peru.