[JasonC]

China sells it at a lower price, that is why Pakistan buys it from them. The Chinese have been making their own knock-offs of Russian military hardware since Mao. If they can reverse engineer the thing, they can make it with cheaper labor than the Russians and so sell it cheaper. The better items in the Russian inventory are beyond their copying ability, though. So they sell their versions of the older stuff, cheap. Notice that when the Pakistanis want a serious main battle tank, they go to the Ukrainians, and when they want better missles and ships, they go to the French. Quality is not China's long suit. Price is.