Do you really think that 3"x3" chunk of "high quality" alloy billet costs $150 more? NO! Do the engine bearings cost $150 more? NO! Does labor and markup (because of their NAME) cost $150 more? Perhaps.
Naw, no one really believes there's a huge monetary difference between the materials...or the manufacturing process.
These products are cheap because the labor lives in shit-squalor...as long as you sleep well...there's not much of an argument.