Chinesium specials. Good enough I guess, but once they break, the parts are probably scarce. I believe that the guy that sells them is a local, so maybe he does keep some parts around. Bearings are easily found elsewhere, no matter the size, but I would ask before purchasing, especially regarding gear sets.
I'm going thru this right now with my Daiwa Zillion reels. Daiwa stock parts for 7-10 years, once they are gone, that's it, game over. I have three of these Zillions, all carrying the 4.9:1 gearset. Granted they are right around 10 seasons old, but all are in super-mint condition and so I'm trying to keep a few sets of gears "in stock," just in case they need them. None to found, nationally. I did find two pinions (which I bought), but you can't just replace one of the two gears, that will not help a grinding reel. I'm about to reach out to Japanese sources to see if they can locate a couple of main gears.
This is why I always preach the same story - when looking at somewhat obscure reels, ESPECIALLY from China, ask about parts. If Shimano and Daiwa don't keep good inventory over the long term, there is no way in hell a retailer of Chinese products will. Unless this doesn't matter to the buyer, of course. Use until it breaks, then just toss it into the trash and get another - seems to be the thing nowadays.