https://www.aliexpress.us/item/3256809986804138.html 100W ECO-WORTHY 18V Monocrystalline Rigid Solar Panel (US-L02M100-B-1) on sale for $41.32 - $4 off when you apply promo code RDC4C on the checkout page = $37.32. Shipping is free (ships from within the United States).