Are you talking about the bulbs listed under accessories? The Satco Products Type Incandescent Bulb? Item # : 864336s?
If so then yes it is possible to order just one, ora 10 pack, 25 pack, etc.
This product is just what we needed. It's the right size for a console piano, and the construction is sturdy. The gooseneck is just right for seeing your music. The only draw back is it needs a 40 watt bulb. A 60 would be more to my liking, but overall we are very pleased.