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Amazon has TP-Link Kasa KL130 Smart Wi-Fi LED Multicolor Light Bulb for $7.49 when you clip the 50% coupon on the product page. Shipping is free w/ Prime or on orders of $25+.
Thanks to Community Member sr71 for sharing this deal.
Note: You must be logged into your Amazon account in order to clip the coupon. Coupons are typically one use per account.