is it free? My xbox got the 3 red rings of death about 2-3 weeks ago and i did the thing on xbox.com to get the box and stuff. so i sent the xbox to microsoft and they repaired it and now theyre sending it back. it should be here in just a few days. the thing is, though, i never got a bill or anything, yet my friend told me that without a warranty it costs about 100$. ive got an email from them saying that its on the way back. i hope its not 100 :/