not prime, but already pretty cheap at around $10. toss it in your backpack and use it as a guide when directing friends to your location (blue lightsaber, stage right gobi). get a bunch for your friends and have battles after the sun sets. be wary though, security forced me to toss mine citing it as a weapon (friend in other line got through just fine).
great thing to pass out at night. make so many new friends with these!