Answered question
I want to use the data in my phone and my ipad, so if I ordered 2 sim cards for the same number/account one to be used in my samsung phone and the other in my mini ipad, will it work this way? and does the plan price changes?
You will have 2 plan one for your phone and one for your iPad. You will have 2 different phone numbers. Even if you have a data plan only a phone number is assigned to your SIM card.
Other answers
No you will need 2 plans and 2 numbers...
What you have done is actually creating two plans with two different number.
You will be charged for both of them.
You need 2 sim cards and 2 plans
You need two plans and two sim card. If I remember correctly, Rogers has share everything plan and allow you to add a sim card an pay $10/month extra for your ipad.