Cost to repair an Xbox

Half a year ago, I bought a refurbished Xbox from EBgames, only to find out that the lens is  damaged. My questions are: how much would it cost to get this repaired, and where could I get it repaired? If it costs a lot to repair it, I'll probably just get a 360. I appreciate the help, guys.

ya, you should just save up money to get a 360.

its not worth waisting a bunch on fixing it.