January 02, 2018 04:42 Updated Follow Yes, CFL bulbs cost more, but they also last SIX TIMES longer than an incandescent. The cost is actually the same over time, if not a little less. Related articles How to I send money to an offender? How much electricity can I save using Compact Fluorescent Lights (CFLs)? Can I really make a difference by changing my lights? What if a CFL bulb breaks? Are they dangerous? I heard they have mercury inside.