This figure was revealed by the Spanish media and they reported that it was outside the costs for the chartered aircraft that left Barcelona on Tuesday night with business-class seating for the 21 players and the rest of the staff.
The friendly game was arranged to commemorate the centenary of the birth of Nelson Mandela, with Valverde continuing: "For us it's an honour that we've been invited for such a celebration".
Goals from Ousmane Dembele, Luis Suarez and Andre Gomes were enough to give Barca a comfortable win over Sundowns.
"The difference between the two teams is like a Rand and a Euro", Mosimane quipped, referring to the weak exchange-rate between the South African and European currency.
Substitute Andre Gomes scored Barcelona's third in the 66th minute, before Messi was introduced to a rousing reception by the South African supporters in the 70th minute.
"We really liked the atmosphere and I can only say "Thank you for the support". We pressed them, so at least we were doing something right.
"But to sum it up, obviously, you could see the difference".
Still, Mosimane saw the benefit in his team facing one of the best teams in the world, and feels his players impressed in patches.
"We struggled a little to get the ball, but then we also had our chance to play and that's what I wanted, for the boys to play the way Sundowns play". But it's a big difference, let's be honest.
"In the last 10 minutes we came out from the back, playing with our centre-backs and we could move out and come out", Mosimane added. He said after the match that they have paid their school fees. But we also took the ball from them, pressed them, and they kicked the ball outside a few times.