In addition to the promo running at Koodo, the folks at TELUS have their own deals running for the BlackBerry KEYone and BlackBerry Motion. At TELUS, you can pick up a BlackBerry KEYone for $200 off or a BlackBerry Motion for $100 off.
With that pricing and a qualifying plan, you can call either device yours for $0. According to the TELUS site, qualifying plans start at $95 which include Unlimited local calling and 3GB of data, but that will vary by region as well so be sure to check out all the options available.