dstergiou

It is not the display name that has to be unique, it's the handle. We have the same issue with email, you get a "name" and an "email address". If the name reads "Bill Gates" but the email address reads [email protected] then you know it's problematic.

Is it trivial for the new user? Probably not. That is why organizations have training courses, where they tell the employees: Pay attention to the important parts (aka the handle, not the name)

You can get an invoice that you will pay later. Thus, you don't need to look for your credit card at the time of the purchase.

You can choose to pay at a later date

You can choose to split the payment into installments