The sequence for the first one
The first order is the one that teaches the mechanics, and the mechanics are the deposit, the purchase, the delivery and the release. The small first amount is the rule, because the first order is the one that is most likely to go wrong, and the wrong one should be the cheap one.
The small first amount
The first order is small on purpose. The amount is the tuition for the mechanics, and the mechanics are the deposit crediting, the order entering the escrow, the vendor shipping and the release. A small first order that goes right is the green light for the next one, and a small first order that goes wrong is the lesson that the bigger one would have been.
The verification before the password
Before the first login, the address bar is the check. The prefix and the tail, read before the password field, because the first login is the one a clone is most likely to catch, and the clone is waiting for the first visit, not the tenth. The verification page has the three checks.
The release, not the arrival
The order is not done when the package arrives, it is done when the escrow releases. The release is the buyer confirming the goods, and the confirmation is the signature that moves the coins to the vendor. The habit to form on the first order is to confirm when the goods are right, and to open the dispute when they are not, because the window closes whether the buyer is watching it or not.