I was aware that the Chinese had developed the JF-17 for Pakistan, and that it was dirt cheap, but I did no know that it is technically a MiG-21 derivative:

In 1989, the Chinese Chengdu Aerospace Corporation unveiled a major upgrade for its locally-made F-7 jet fighter, a licensed copy of the classic Soviet MiG-21. The new F-7 variant moved the engine air intake from the nose tip to the sides of the fuselage, making room in the nose for a more powerful radar.

Twenty-one years later, this upgrade—now named JF-17 Thunder—is flying combat missions with the Pakistani air force, so far its sole user. Further enhanced with a new wing, a cutting-edge intake design and a new, more powerful engine, the JF-17 is Pakistan’s most important front-line fighter—and a remarkable extension of a basic plane design dating back to the 1950s.

In essence, the JF-17 is the ultimate MiG-21. In a sector increasingly dominated by American-made stealth fighters, European “canard” planes and variants of the Russian Su-27, the JF-17 is an outlier—a highly evolutionary plane that doesn’t try to be revolutionary.

(emphasis original)

The report is that the agility is similar to that of early model F-16s, which is to say better than that of later, heavier, models.

I’m not sure how much of the original MiG-21 remains.  The fuselage immediately behind the cockpit looks vague similar, as does the landing gear arrangement, but the wing, horizontal tail, and vertical tail are completely different.

At $25 million a pop, it’s dirt cheap, and the new engine should improve range, though considering  the limited range of the MiG 21, this is not a high bar to clear.

It’s a lot smaller than most of the other fighters currently in production.  It’s the size of the Gripen, and smaller than the successor Gripen E/F, though both of those aircraft have significantly greater payload and range.

If I were a budget despot, it would be on my list.