He has now been directly involved in 14 goals in 14 Premier League appearances under manager Brendan Rodgers.
Vardy was matched by Sergio Aguero (£12.1m) in Saturday's eight fixtures.
Aguero continued his prolific start to 2019/20 and is the only player to score in all of the opening four Gameweeks.
The Manchester City striker is now the top-scoring player in FPL on 40 points.
Aguero's team-mate, Kevin De Bruyne (£9.7m), is just one point off the top of the FPL midfield standings.
The Belgian produced one goal, an assist and two bonus points at home to Brighton & Hove Albion.
The Chelsea frontman is the most-bought player for Gameweek 5 after his back-to-back hauls of two goals and 13 points.
Over 154,000 managers have signed Abraham for his trip to Wolverhampton Wanderers.
Alexander-Arnold supplied his third assist of 2019/20, helping the Reds to their first clean sheet of the campaign in a 3-0 win at Burnley.
Firmino extended his fine start to the season with a goal and an assist at Turf Moor.
The Brazilian, along with De Bruyne, Vardy and Abraham, was one of four "Ones to watch" named by The Scout to produce double-figure points hauls.
The other, Sebastien Haller (£7.5m), also enjoyed a successful weekend.
Over 181,000 managers had bought the West Ham striker for his home meeting with Norwich City.
And Haller rewarded their faith with a goal and eight FPL points in a 2-0 victory.