Concert promoter AEG Presents isn't sweating the loss on the cancellation of the remaining dates on Justin Bieber's Purpose World Tour. Company sources say, overall, the 154-concert tour was very successful, but some of the final dates weren't selling that well. After playing sold-out arena dates all over the country, Bieber might have been pushing his luck trying to return and play stadium shows without releasing a new album, sources say.

Just one of the 14 shows left on the tour was a sellout, and in nearly every market, 5,000 to 12,000 tickets per show were available on the secondary market, often priced below face value. That made it very difficult to sell any additional tickets, and in many markets there were large sections of the stadium that were unsold.

Sources at AEG said despite the slow sales, they were planning to move forward with the final 14 dates when the singer's camp informed them he was canceling the rest of the tour.

"If the sales were better, we might have pushed a little harder to try and convince him to finish the tour," our source tells us. Despite the final cancellations, Bieber's 154-date, 16-month Purpose tour was a win, according to AEG, with one official telling Billboard, "this tour made so much money." According to Billboard Boxscore, the 28 dates reported this year grossed an impressive $68 million.

"He just played 154 shows. He made millions of dollars. He needs to take a break," our source said. A

s for insurance, the entire tour was covered, although it’s unclear if AEG will file a claim since both parties agreed to the cancellations.

Bieber was set to play at AT&T Stadium (July 29) in Dallas and then on to the Rose Bowl (Aug. 5) in Pasadena, California. After additional dates in New York, Denver, Minneapolis, Boston and Toronto, Bieber was scheduled to play two shows at Ajinomoto Stadium in Tokyo (Sept. 23-24), as well as dates in Hong Kong, the Philippines and Singapore.

In a statement on his website, Bieber told fans: "Due to unforeseen circumstances, Justin Bieber will cancel the remainder of the Purpose World Tour concerts. Justin loves his fans and hates to disappoint them. He thanks his fans for the incredible experience of the Purpose World Tour over last 18 months. He is grateful and honored to have shared that experience with his cast and crew for over 150 successful shows across 6 continents during this run. However, after careful consideration, he has decided he will not be performing any further dates. Tickets will be refunded at point of purchase."

After the cancellation was announced, manager Scooter Braun took to Instagram to apologize to fans, saying Bieber "gave it his all," adding, "To those that won’t be able to see it…on behalf of myself, Justin, and the team, we are sorry. That was never our intent. But a man’s soul and well-being I truly care about came first and we must all respect and honor that. Justin will be back and I know he looks forward to performing for you and with you all again.”