How can Costco undersell other gas stations by 23 cents a litre?
While other stations say their profit margins are tiny, Costco says it turns a profit selling cheaper gas.
How can Costco undersell other gas stations by 23 cents a litre? https://t.co/VUDuo1oA88 via @CTVVancouver
— CTV News (@CTVNews) May 24, 2018