e-file more than 5 returns

I spoke with intuit customer support today and asked"if I e-file 5 returns with my current tt premiere first, and then upgrade, can i e-file 5 more returns with the upgrade" and was told Yes, that the upgrade would allow me 5 additional e-files. I then asked can i use the same email address, she checked with her reference, and told me that i could use the same email address for the additional 5. Don't want to spend the money on the upgrade if it's not going to allow me 5 more e-files, so need advice....