I was paying about $3.00 for a 500 watt halogen bulb in the stores and I go through a lot of them. I found them $1.70 each and no shipping for 36 or more. hardwareandtools.com

For those of you with a nova 2000, I got a case (500) tear off lenses for $16.50 per 50 pack plus about $10. shipping. 35 cents each from abrasivesandequipment.com

Hope this helps some of you save a buck too.