Yes, there are many optical stores who are running a 2 for 1 promotion. As  Clearly.ca buy 1 get 1 free regular lenses included with frame purchase.
And there are many optical stores who are running 1 for 1 promotion . As – Walmart always has a two glasses plan. I got my two pairs from there with several special coats on the lenses, great quality surprisingly, for $300.

thanks.