No, we think in terms of switchmode "buck" regulator modules.
But in this case, even that is ridiculously optimistic.
What the OP has not explained, is what voltage his secret power supply ("Wall wart") actually is. If it is 12 V, you would be lucky to get 200 mA out the the regulator before it overheats. (7 V drop at 200 mA = 1.4 W; prompt overheating. You might just get it to work with a 9 V supply at 200 mA = 800 mW.)
Almost all of the electronics we currently purchase is of Chinese manufacture, particularly the individual components. 