Collectables en Why Legos are so expensive — and so popular I went to Toys R Us recently to buy my son a Lego set for Hanukkah. Did you know a small box of Legos costs $60? Sixty bucks for 102 plastic blocks!<p>In fact, I learned, Lego sets can sell for thousands of dollars. And despite these prices, Lego has about 70 percent of the construction-toy market. Why? Why doesn't some competitor sell plastic blocks for less? Lego's patents expired a while ago. How hard could it be to make a cheap knockoff?<p>Luke, a 9-year-old Lego expert, set me straight.<p>"They pay attention to so much detail," he said. "I never saw a Lego piece ... Thu, 13 Dec 2012 23:37:58 +0000 7356 at Why Legos are so expensive — and so popular