I bought it in january in an authorized distributor. A week later I had to change it because the left USB started to disconnect randomly so it had a bad logicboard (this means to migrate, and install EVERYTHING, again from zero in the new laptop). They tryed not to change it because they told me it was normal because the apple testing system didn't warned about any problem. But in front of him I took a cable that they had in their computer and connected my iphone, my girlfriend's iphone, I change the cable with mine AND NONE WORKED. So they told me.. Okay.. We wil change it.. Some weeks later new model is released with 16gb of ram and a more powerful processor for the same price so I was so happy One month later I was using Safari and I went to have dinner. When I returned I opened photoshop and I could clearly see Safair's web page burned in photoshop's grey background. Two days later I sent it to the authorized technical service and they told me that the screen will last ten days to be repaired because it had Image Persistence problem, because I had an LG Display . But they can't garantee that I'm going to get another LG display, and even that apple will fix it because it is supposed to be normal. So I'm here writing you from my 2004 fujitsu laptop that sounds like a helicopter in wich I will have to work without any of my pictures (because they are hijacked in my iPhoto's library that can't be accesed from my windows laptop) for ten days. Praying for not to have another LG display that will make me wait another 10 days to work with my files and programs. So i can really say that macbook pro retina has ruined my work, nerves and life since I bought it, at such point that I don't know if it is better that they don't return it to me. My advise is "DON'T THE BUY FIRST GENERATION OF MACBOOK PRO RETINA". I made the error of buying it and the hell continues.