This is a variation of what is normally available.
Have just been sent a flyer showing this deal for this weekend only.
$99 a month
150gb of data with no excess data charges (capped speeds)
5g availability
12 month contract (not the 24 they are doing now)
$30 monthly credit. (Assuming for first 12 months)
$500 gift card. (No expiry)
Effectively $69 a month
Minimum total cost over 12 months is $828
$828-500=328
$328/12 = $27 a month
It's no $59 a month with $500 giftcard but you get 70gb extra.
so $99 with $30 credit… so $69 per month?