If you are considering buying pathway or ground lights, consider buying the solar lights instead. They use no electricity and there are no cords to get in your way. They can be placed anywhere in your yard because they don't need a power source. They recharge everyday, even on cloudy days and light up at night. They cost more initially but will save money and the environment in the long run. Also, you can take them with you on camping trips.
You can buy solar lights online or at your favorite hardware or garden store. If they don't have them, request them. There are many on the market.
Using Solar Lights in the Garden