You dont think that a 7 day headstart holds any value?The headstart can't really be called a headstart. It's more like an open beta than anything, so it really holds no value in itself.
Plus it's not just the 2x nair and 100 storage tickets, it's the 2x appearance change token and an astel skin you get to pick (from what i've gathered). 1x appearance token cost 100gems = 200gems alone. You've got to look at the raw content value.
the raw content value you get from the $100 legendary package is lower than what you get out of the $80 package which cost less.