It's not about $20, it's about 20%. If you're thinking about buying 4 or 6 of these things, 20% adds up.

Also for some people, $20 does matter. Lots of people are out of work — unemployment hasn't been this high in decades.

Probably not relevant to what GP is trying to argue, but it would likely mean they’d price it at CAD $99 instead of CAD $129. Fairy significant psychological difference there.