on September 30, 2013
Just want everyone to know that it is really true that the price on www. lego.com is much cheaper, it is only $28.99 plus standard shipping charge $6.97. Comparing to it, how expensive here in amazon. same for LEGO Light sensor $19.99 and LEGO Touch sensor $19.99. So, just go www.lego.com to buy those items and it is really worth it to go there.