Holigoo Direct via Amazon offers the Qedertek 21-Foot Flower Solar String Lights in four color options (Multi-Color pictured) for $11.99. Coupon code "W7AZKFBQ" drops it to $5.40. Plus, Prime members bag free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $6.59.) That's $35 off and the lowest total price we could find. It features 50 LEDs and a solar panel with 600mA NiMH battery.