Gas And Diesel Prices Fall Slightly Yarmouth, NS, Canada / Y95.5 News Mar 16, 2018 | 6:33 AM A slight drop in pump prices this morning. Gasoline is down 7 tenths of a cent a litre and is selling for $1.13.4 cents for regular self-serve in most of the Yarmouth area. Diesel fell by the same and is at $1.15.2 cents a litre.