Well lets see. LEDS at ***** Smith cost $16.50 for 10. Resistors cost 60cents for 10. For me it should cost me only $17.10... A soldering Iron should cost around $15 - $20 and some solder would be about $3, so if you don't already have the tools then I would expect it to cost about $40 all up. But I would factor in some errors, so your looking around $20 to be honest. I still haven't determined yet whether the LEDS don't work, or i just didn't get the polarity right. Will know by tomorrow, or maybe tonight.