Less than £10m was spent in total this summer with only three signings arriving - defenders Laurent Koscielny (£6.5m) and Sebastien Squillaci (£3m) along with Moroccan striker Marouane Chamakh (free).
Yet, boosted by profits made from the redevelopment of the club's former home Highbury, Arsenal's net debt has gone down from £297.7m to £135.6m.
But Wenger, whose in-form side entertain West Brom today, claims he carries a stigma for preferring to sign less well-known players while bringing through youngsters, rather than throwing around loads of cash.
The Emirates boss, who has £30m to spend if he wishes, said: "We make a profit because we don't spend - simple as that.
"What is unbelievable, is that people approach me for making a profit but no one says a word to those who lose money. I'm not afraid to spend money but I manage in a safe way. It now looks like we are in a business where the quality is to lose money.
"If I always bought players then Jack Wilshere wouldn't have come through. You cannot have everything.
"I know that and I've been in the job long enough to have a development policy to educate the players. The most difficult thing is to play them and to stand up for it."