I was trying to buy a book from Springer in the Yellow Sale 2012. I chose to pay by invoice, without knowing what it means!?! Further, if it matters -- I filled in: Billing address, Shipping address ...
I have a verified PayPal account which I'm using for the last 3-4 yrs. I want to buy a book from a web site, but PayPal is the only option listed for payment. I have money in my bank account, but I ...