I ordered a new one for $54.02 from AutoPartsAvenue on ebay.
Step 1: Removing the broken Mirror.
Step 2: Installing the replacement
After the nuts are tight, not ridiculously tight however, I plugged the little electrical thingy back in.
Replace the plastic cover, I took a couple more pictures but for whatever reason they're not uploading correctly so I used the same pic from earlier here, but you know what I'm talking about.
Step 3: Test & VOILA
If I have to do this again I'll be extra careful not to lose the nuts as I take them off, they could easily fall between the door frame and another piece of plastic and that would be a bad thing.