Reddit mentions of Last of Us American Dreams #1

http://www.mycomicshop.com/search?TID=24142019
That's where I had gotten mine. I paid $12 for my 1st print issue 1, but it looks like they're gone now. On the plus side, you can still get issue 3 if you dont have it already. However they kind of take a long time to get your stuff to you.

Otherwise Amazon 2nd printing at around $18:
http://www.amazon.com/gp/offer-listing/B00DNGK4W2/ref=dp_olp_new?ie=UTF8&condition=new

Amazon 1st printing around $26 and up:
http://www.amazon.com/gp/offer-listing/B00C2E0GX8/ref=sr_1_2_np_1_main_olp?s=books&ie=UTF8&qid=1373130081&sr=1-2&condition=new

And Amazon issue 2:
http://www.amazon.com/gp/offer-listing/B00D02VOKA/ref=sr_1_1_olp?ie=UTF8&qid=1373130357&sr=8-1&keywords=last+of+us+american+dreams+2&condition=new

Gonna be pricey, but hopefully that helps!

I just bought mine on Amazon.