Amazon offers Prime members the Bear Motion Color Changing Solar LED Glass Ball Light Fixture 3-Pack
, model no. BMSLB3PK, for $19.99
with free shipping
. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $7.93.) That's $5 under the lowest total price we could for a similar 3-pack. These solar powered lights change colors and are weather-resistant.