It does not really take into account cases like Rhonda’s, tax having to be collected seperately or an extra person for a night or two of a long stay or me bying a phone card for my guedts. The article presents it like everything should go through the website. Sorry, but I may pop into a shop next door, sit in line for a while, get the card and install it in the phone (done via a French robot, press one, press 3) and accept cash for it a real price. Add an half hour sending a payment request and weite an explanation and check later if it’s paid, that would be way over my limit for free work. ;-) Otherwise it is a good article, just the stupid ones never read.