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KOOPER via Amazon [amazon.com] has for Prime Members: 4-Pack KOOPER Solar Lanterns Outdoor Waterproof w/ Flickering Flame & Constant Modes on sale for $29.99 – 35% off when you apply promo code 4U73MP3Z at checkout = $19.49 ($4.87 each). Shipping is free.

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.