Answered question
Considering joining Fizz, but I'm not sure how to build my plan because I'm unsure if I will be able to keep my plan price after the stabilization period is over.
Here is current plan info and prices for the duration of the stabilization period
https://fizz.ca/en/mobile-plan
The stabilization period will last at least until the month of July 2019.
https://fizz.ca/en/faq-stabilization-period
Stabilization period prices are discounted by 30%. After this period, your plan will return to regular price.
Other answers
You will have to pay regular prices after the stabilization period is over.
Take a look at the Launch FAQ: https://fizz.ca/en/faq-stabilization-period It has some sample plans and the difference in price during and after the stabilization period.
Yes, you will have to pay normal price
Unfortunately, yes. The discounted rate will go up to normal price for anyone signing up at this point. At least you save some money for now though.