I have my UK-based Android smartphone, but yay for Orange (sarcasm), it's locked and will take 3 weeks to unlock! Fortunately I also have a low-tech Nokia - I just need a sim. Rogers quoted me $70 CAD to get up and running with a pre-pay sim. Given it costs about 10 pounds in the UK to do the same, this seems pricey. Any suggestions for pre-pay sims (I don't need data, just text and phone). In Vancouver.
With Fido you can get a pre-pay sim for $10.
There are a variety of prepaid rates available. Personally I use the $10/month rate. You can change rates whenever you refill your account.
From Google it looks like there are plenty of Fido stores in Vancouver. So you could pop in and pick up a sim when you arrive.
The Fido website is good for managing your account. Note that I did have trouble refilling my account via the website using an overseas (New Zealand) credit card. If you have the same problem you can always buy refill voucher from a Fido store.
7-Eleven sells SIM cards for $10. They are a MVNO reselling Rogers service. Their main attraction is that prepaid credits are valid for one full year. However, it is not available for sale in all provinces (notably Quebec).
The price sounds rather high....
A price of $70 sounds like it includes a phone too. I'd suggest trying a bigger Rogers store and hope you get someone more helpful the 2nd time!
(You can also get new Rogers Pay As You Go SIM Cards off ebay for around $10 too, including shipping, which does look like it's the correct price)
First of all, please note that there are 3 Mobile Network Operators (MNOs) in Canada providing services to ~90% of mobile phone users in Canada.
Parent companies for these 3 MNOs are:
1- Rogers Communications (10M+ subscribers (subs) as of Q2-2016)  2- BCE Incorporation (9M+ subs)  3- Telus Corporation (8M+ subs) 
These MNOs have subsidiary brands:
1- For ROGERS COMM: (Rogers Wireless, Fido Mobile, Chatr Mobile, Cityfone, Primus Wireless, Zoomer Wireless, and SimplyConnect) 2- For BCE INC. (Bell Mobility, Virgin Mobile, Lucky Mobile, Solo Mobile, and Bell MTS). 3- For TELUS Corp. (Telus Mobility, Koodo Mobile, and Public Mobile).
The remaining 10% of subscribers are served by smaller regional providers referred to as Mobile Virtual Network Operators (MVNOs). The difference between MNOs and MVNOs is that the latter rely on partnerships with MNOs to connect their customers across Canada. In fact, MVNOs do not own spectrum or network infrastructure, instead, they lease network capacity from MNOs at wholesale rates and distribute it in retail.
**Operator Ownership** 7-Eleven Speak Out Wireless Ztar Mobile Cansel Connect Cansel DCI Wireless DCI Telecom Execulink Mobility Execulink Telecom good2go Mobile Canada Ztar Mobile KORE Wireless KORE Telematics OnStar General Motors PC Mobile Loblaws Petro-Canada Mobility Ztar Mobile Lucky Mobile Bell Public Mobile Telus Chatr Rogers
With all these options, in order to select the package that is suitable for your needs, I suggest that you check the following website: www.planhub.ca
It helps you identify the ideal package for you based on your calling minutes per month, data per month and cell phone (bring/buy).
Hope this helps.
Reference:  http://www.cwta.ca/wp-content/uploads/2016/08/SubscribersStats_en_2016_Q2.pdf