I don't have one of these, but I have something that costs less than that.
I buy regular style full-spectrum bulbs from the health food store called "NeoLite" bulbs. They cost $8 each and fit in any light fixture that takes incandescent bulbs. You can buy them even cheaper online if you buy a larger quantity, such as at this site:
http://fullspectrumsolutions.com
However, one bulb lasts a long time...the one I've got in my swing arm lamp over my stamping table is around 3 years old and still going strong! It says it will last 5000 hours and they are defintely long lasting!