If you opt to have 12 months contract, there is a $49 activation fee. The fee is waived for 24 months contract period.
Screenshot of the checkout page: https://imgur.com/efuRZz9
IMHO, the best way is to get is the no lock-in contract ($99 activation) and if you decided to change your mind, you are free to do it anytime.
If you are on Opticomm estate, use this deal.