I can certainly appreciate the precision of Lego pieces, as I too have mixed and matched incredibly old pieces from my parents's era (1970s) with more recent (2000s) stuff. And I think the OP did a decent job collecting precision data for the article.<p>However I find the post title to be misleading as surely there's a whole lot more that goes into the actual market valuation of a Lego kit. What about the type and quality of plastic used, the rest of the manufacturing process, quality control, the overhead of having to design new kits regularly, etc? Building Lego kits is more than just shipping cheap generic plastic widgets from China straight to store shelves.<p>For what it's worth, I've found Lego designs to be consistently excellent, with well thought-out part selection, part placement, structural integrity, and so on, in everything from the small $10 kid sets to the $300 Mindstorms NXT kits, so the price has never really bothered me.