Costco Sale: Inside Outside Lighted Spheres 2-Pk $39.99 by Rhonda July 16, 2020 12/26/16. Durable resin and metal construction is weather-resistant, making these spheres great for outdoors or indoors. Costco has the Inside Outside Garden Lighted Spheres Set of 2 on sale for $39.99 … 0 FacebookTwitterPinterestEmail