I dunno actually. All my repairs have been free, thanks extended 3 year warranty!
However some searching has found this:
Console repair: Frequently asked questions
Q. How much does an out-of-warranty repair cost? A. The cost of an out-of-warranty console repair varies:
When you send your console to our service center for repair, we test your console for three flashing red lights or an E74 error. If your console does not exhibit three flashing red lights or an E74 error, and you are out of the standard one-year Product Warranty, you can have your console repaired for a fee or choose to have your console returned to you unrepaired.
- $99.00 plus tax if you submit a repair request online
- $119.00 plus tax if you call Xbox Support and have a support agent create the repair order for you
So $100 assuming that you can handle a simple online form. Also I found this too:
Q. What is my warranty after my console is serviced? A. We provide a post-service warranty for serviced consoles. The length of the warranty depends on whether the service was in-warranty or out-of-warranty as follows:
- In-warranty service: If your Xbox 360 console was serviced within the original warranty period, you receive either the balance of your original warranty or 90 days, whichever is longer.
- Out-of-warranty service: If your Xbox 360 console was serviced out of the original warranty period, your serviced console will have a one-year warranty.
1 year warranty if you pay for a repair? Fucking nice! Definitely beats that time I paid Sony $150 to get the faulty blu-ray drive in my 60GB replace and it came back with a puny 90 day warranty.