Part of the 'p....s off" is she's been building it and modifying it for a couple years. Now, the host is forcing her to re-do everything or charge $300 ...
It's not the value of charging $300, maybe that's reasonable ... but Go-Daddy is charging her because GO-Daddy made a change, not that she made a change. She's been paying them every year as host and believes they should not charge her because Go-daddy suddenly makes her work obsolete. As one (both of us) lack tech skills, it becomes more difficult.
It's not specifically the price / value of the change - it's once again the tech world forcing a person change something she does not choose to change. She's perfectly happy with what she has now.