The Sixers entered Friday 19th in the NBA in attendance, averaging 16,075. Each of their previous five home games have attracted more than 18,000.
"We're doing that with lower prices if you look, it is accelerating, and it is filling up great," Harris said.
He said the team would pay to bring in a superstar-caliber player, but with caution.
"Those are types of things you do and if you get it wrong, it puts you way back, so you have to be very careful," Harris said.
Still, he would consider it if the right player emerged.
"We have a deep-pocketed, committed ownership group, but we are going to be sensible about it and not do that just for anyone," he said. "It would have to be somebody really good."
Regardless of whether the Sixers upgrade the talent, Harris sees the success continuing.
"I am very happy at the midpoint," Harris said. "I feel we have a real shot of being a contender deep into the season as we go into the playoffs."
Hawes' return unknown
Spencer Hawes won't be returning to the 76ers lineup anytime soon. After Friday's morning shootaround, the Sixers announced that Hawes would be seeing Richard Ferkel from the Southern California Orthopedic Institute, probably on Thursday.
Friday's game was the 16th in the last 18 that Hawes has missed because of a sore left Achilles tendon. He also missed one game with a back injury.
"It's been a frustrating situation," Hawes said. "It will be good to get another opinion and possibly get a realistic timetable."
Hawes said he has been in a boot since Feb. 11 and expects to be in it a total of two weeks. There is no estimate on his return.
No tribute
The Sixers were hoping to have a tribute to Whitney Houston, but CEO Adam Aron tweeted that at the request of the family, they declined.
Aron tweeted: "Many have proposed we play Whitney Houston's national anthem as a tribute. We reached out to her family and they asked us NOT to do so."
