The 22-year-old Belgium international has scored 14 goals for Villa this season despite the team's struggles and El Ahmadi reckons his team-mate is up there with the best.
"Chris is one of the best strikers in the Premier League," said El Ahmadi.
"There are games when he can be unplayable. Every week I am surprised by what he does and his ability.
"He is getting better every day. And he's what? Just turned 22? That's unbelievable. From the beginning he has been great for Aston Villa.
"How much is he worth now? I don't know about today's prices but this is a league which pays £40m and £50m for strikers. He can be priceless for us."
Benteke netted twice in Saturday's 3-3 draw at Everton but a last-minute headed equaliser from Marouane Fellaini leaves Paul Lambert's side stuck in the relegation zone.
While admitting the loss of two crucial points was a blow, El Ahmadi refused to point the finger at the team's defenders.
"It feels like a defeat - we were so close to getting three points," added the 28-year-old Moroccan.
"But Fellaini is a player who nobody can stop from a corner. So you cannot blame the defence for that goal."