Don't waste your money on additional storage. I posted the method a couple of pages back.
Basically, find a large folder you want to import. The folder can be any size. The folder can have multiple folders inside of it. But during the import, you can only import the one folder (top-level folder). Use Temp-Mail to create an email and use the email to create a new Mega account.
The new Mega account you are importing to has to be from the Mega app on either your phone, tablet, or Android emulator on PC. Once the account is active, take the link of the folder you want to import and perform the import from the Mega app. Please note this does not work on the PC version; you have to use the Mega app.
Once imported, no other content can be imported because the account will be over storage limit (50GB). I just did this a couple of days ago. It does work. For temporary, throwaway storage and sharing, this is an amazing method that is free. If anyone has any issues, just post here. If you are computer illiterate, don't even bother. A second-grader can do this.