Arsene Wenger hopes Gervinho will go on to prove a bargain after the hotshot netted a brace on his debut.
The striker scored both goals in the 2-1 pre-season win over Cologne in Germany - his first appearance since a move from Lille for an undisclosed fee, believed to be around £10m.
Wenger hopes there will be plenty more to come from the 24-year-old as the Gunners seek to end a five-year trophy drought this term.
He told the club's official website: "I hope (he'll be a bargain). When you see all the fees around you become dizzy.
"We do what we want and we look first at the quality of the player and after if we have the money we spend it.
"In this case he wanted to join us. He had only one year on his contract so it was a good opportunity for us."
Wenger believes breaking his duck so quickly will help the striker.
The Arsenal boss added: "If, as a striker, you go six weeks without a goal you raise questions. But now it's out of the way.
"You could see how quick he is to get behind defenders. He has qualities that are always very interesting for a team like us who have a lot of other players that go behind defenders at the right moments."