IMHO from years of experience, the use of inferior materials is only cost beneficial if there are no labor costs. In other words just for things you throw away.
If the only problem was the performance good or bad it would be an easier question. The problem is that compressor failures very in their consequences. It's a real bummer to replace a leaking compressor with the relatively minor secondary operations and then have the POS scatter burned aluminum, oil, refrigerant throughout the system. This little event virtually for all time destroys that cars A/C.
Short of total replacement the system will fail sooner, work poorer no matter how much futher work put in it.
If you pay someone to do the work the difference in total cost between the rebuilt and the new repair will probably be around 20%. Not good odds in my book.
Owner 24 bay BSC
Bosch Master, ASE master L1
26 years MB technician