I ordered two sets and it was cheaper than buying each at the pet store. However, one lightbulb died within 24 hours of use. After checking all the bulbs, which I didn't do when I received them, I found that the other two bulbs weren't working at all. I'm not sure if they were defective to begin with or if they were damaged during the shipping process. Unfortunately I think this is the chance you're taking the risk of shipping bulbs.
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