The president insists the club's busiest summer in many years was forced by the sudden departure of Tito Vilanova last season
Barca shelled out over €150 million this summer as they brought in a host of new players ahead of a transfer ban that will restrict them from recruiting players in each of the next two transfer windows.
Despite their vast transfer fees, Bartomeu insists players don't move to Catalonia just for the financial reward.
"In the club there is no player in the squad who plays for money, no," he told El Mundo Deportivo. "Here you do not play for money. Everyone, including Lionel Messi can earn more elsewhere.
"Everyone has had many other offers. When a Barca player plays only for money, he will have to find another club because the club cannot afford it."
The president revealed that he had to delay their massive spending spree last season due to former coach Tata Martino's sudden arrival following the departure of the late Tito Vilanova.
"Tito’s illness and the unexpected situation crippled operations," Bartomeu told El Mundo Deportivo.
"The coach wanted to see the team play before take decisions. I admit that it was an unusual situation.
"I am responsible. The decision not to sign players was a collective one, though Tata Martino made his opinion pretty clear... The decision was made.
"It's true that this summer we have had one of our biggest renovations in many years."
Barcelona's most recent arrival is right-back Douglas, who joined in a €4m deal from Sao Paulo, and Bartomeu was quick to point out that the signing of the Brazilian is different to previous deals that saw compatriots Henrique and Keirrison come and go without making an appearance for the club.
"Douglas is a player who was requested by our technical team and by the coach. I remember the other two were not requested by Pep Guardiola," he said.
"The second big difference is the price, we have tried to adjust the investment to be as low as possible. He was wanted and comes at a very low price in the context of the current market."