iSuppli is a site that provides true mfg tear down cost of a wide variety of electronic devices. For example here is a Kindle 2 in early 2009:
Amazon?s Kindle 2 Costs $185.49 to Build, iSuppli Teardown Reveals - iSuppli
btw, that prices was when the Kindle 2 was around $350, today the teardown will be a lot lower, maybe around 30%-50% lower
It would be interesting to see what the current tear down costs are for lenses...any lenses would be fine as a ballpark idea is all I think is needed.
Something to consider when looking at lense prices these days, is glass production prices are very dependant on energy prices. Because there is so much heat needed to melt the glass. And the better quality the glass, the more times a batch will be run through melting process. Then there are the very controlled conditions for cooling the glass each time.
I think almost everyone here must have viewed the lenses making vids on YouTube and they only allude to the fact glass chemistry is a very high end science and also formulas are tightly guarded secrets. And even the slightest impurities in the air or processing gear can ruin an entire batch. So, the actual yield rates would also be interesting to know.
I am not saying that prices today involve a lot of sticker shock, nor am I defending HoyaTax's pricing tactics with their MAP agreements which are about as anti-consumer a thing as exists today. Just thought its the one place where I can appreciate why a lense would have increased at what seems to be a disproportionate rate. BTW, using things like US Fed. Minimum Wage might not be a reasonable gauge simply because of the inconsistent adjustments on that wage relative to inflation.