“Ashforth showed us how it works: you pay in advance online or at an in-store kiosk.” Aaannndddd you’ve just re-invented going to someone with a key to go unlock something. It does look to be a bit better, but considering half of the point they where making was allowing ease of ‘obtainablity’ to customers, you still need to go to someone to ask them for the item.
You can go pretty cheap on a mobo if your trying to save money, at the cost of less connectivity. (Less usb, less pcie, etc.)
And a power supply should always come with the cables to wire up power.