As far as cash, I paid for 90% of my iPad with $50 and $100 bills (gifts and exchange cash from built-up lunch money change) and the rest via credit card, so they do take cash for certain.
In regard to the "No AT&T because of scalpers," I was ~40th in line at the Albany Apple Store (out of probably 2-300), and when they came around to ask who wanted what model, there weren't all AT&T people ahead of me. When they get to me, I requested a 32GB White AT&T model, and they said they couldn't...not because they sold them out, but because they literally got no stock of that particular model. I'm not sure what the distribution pattern was, but a flagship (of the area) Apple Store didn't even get one type of model. That doesn't speak to scalpers, it speaks to bottlenecks in the supply chain somewhere for certain models.
In regard to the "No AT&T because of scalpers," I was ~40th in line at the Albany Apple Store (out of probably 2-300), and when they came around to ask who wanted what model, there weren't all AT&T people ahead of me. When they get to me, I requested a 32GB White AT&T model, and they said they couldn't...not because they sold them out, but because they literally got no stock of that particular model. I'm not sure what the distribution pattern was, but a flagship (of the area) Apple Store didn't even get one type of model. That doesn't speak to scalpers, it speaks to bottlenecks in the supply chain somewhere for certain models.