I have one that I am not using since I am replacing my alpine headunit with a carpc. I already sold my headunit, but I still have the xm tuner box.
The only problem is that it is slightly rusted on the bottom due to some moisture that got into my car a while ago and the screw holes are a little bent. It still works flawlessly, but it doesn't look as pretty as it used to.
I'll post pictures ASAP. You can get it off ebay for around $200, but I'll sell you mine for $120+shipping.