Its something like 4.99 for the insurance through Asurion, which covers everything from water damage to theft. Then for 5.99 you can get the 4.99 Asurion insurance + the 1.99 extended warranty which basically covers manufactures defects for a longer period than the originial 1 year warranty. Its something along those lines anyway...
My wife and I have the 5.99 ins. And my env had dust in the screen, also the micro sd slot wasn't working right. They replaced the phone for free. My wife also decided she just wanted a newer phone (she's got the voyager), so she told them that it was just shutting itself off all the time and rebooting, they replaced it for a new voyager with no charge. Great customer service!