https://www.instagram.com/aphotoeditor/ examples

Well, I still looking for the printing lab to print accordion fold types or poster type promo. I found Duggal lab but I need more options I think. If you ever order for promo cards or what so ever, where do you usually order them?

try here

http://www.mpix.com/products/funstuff/accordionmini

this might be what you want

those look amazing.  I wish I had the budget for that too.  I've been using a local printer and have a cheap trifold.  Maybe after I upgrade more equipment this year I will try to get something like that done.  Meantime I keep my promotional budget at 5%