Amazon
I had to order some things from Amazon¹ (for the first time in a fair while) and it's interesting that they seem to be pushing Prime extremely hard. I had enough to get free delivery and they no longer offered me any paid option for faster delivery; it was free or 'please please please sign up for Prime'. Also, the free delivery dates seemed unusually extended.
If this is a signal that Amazon Canada is suffering, well, we should keep it up.
¹ I know but they're the only source, bleah.