Is this right?
eTopLighting (5) Bulbs, J Type 78mm Double Ended T3 Halogen Light Bulb 120V 150W 120 Volts 150 Watt
Even cheaper if you get a pack of 10 bulbs:
http://www.amazon.com/eTopLighting-Bulbs-Double-Ended-Halogen/dp/B005BYZAWI/ref=sr_1_8?s=hi&ie=UTF8&qid=1423198321&sr=1-8
