I would prefer to buy American but all these hpa compressors being sold by these airgun stores/company's are made in china anyway and marked up 200+% so if you cant afford a $3000.00+ compressor might as well skip the middle man.
The only maintenance that I can see is changing the filters out when needed..I opted for two mositure traps, small one and the big gold one..They send you a big bag of filters for both mositure traps..
Just found the compressor mentioned by Billzach in the counterpart of Ebay in China, the cost of compressor + 12V DC supply is 999 RMB ( about 150 USD ) . Will go for it when my YH retires. YH is too noisy for me.