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LINKIND-US via Amazon [amazon.com] has 4-Count Linkind A19 75W Equivalent Outdoor LED Dusk-to-Dawn Light Bulbs w/ E26 Base (1200 Lumens, 5000K Daylight) on sale for $7.49 when you apply promo code 3RKMC6WQ at checkout. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don’t always apply seamlessly. If you run into this issue, try refreshing the page, re-entering the code, or checking after you select a payment method to confirm whether it already applied.