Most residential internet plans include only 1 dynamic IP address, unless otherwise specified. Telus does not specify, so you can assume that their residential plans (including Internet 50) only include 1 IP.
However, small business internet plans, although more expensive, typically offer more than 1 IP address. Telus's "Office Internet" plan, their fastest small business plan at 25 Mbps, offers 2 dynamic IPs and unlimited data for $85/mo.
To be honest, Shaw is the only ISP I've ever heard of that offers more than one IP to residential users for free. Going forward, it is unlikely that Shaw will continue offering free additional IPs for much longer, as the current state of IPv4 exhaustion makes acquiring IP addresses much more costly and difficult.