Arsenal have already brought in £11million Ivory Coast forward Gervinho, and are understood to be close to an £18m deal for Valencia midfielder Juan Mata, while bids for Everton's England centre-back Phil Jagielka and promising young Costa Rica forward Joel Campbell are also on the table.
More exits are also expected, with striker Nicklas Bendtner on the verge of a £9m move to Sporting Lisbon, while Emmanuel Eboue is reported to be ready to join Galatasaray, which should help offset any outlay on new signings.
"Business will be done sooner rather than later," Wenger said at tonight's news conference ahead of the Emirates Cup.
"At the moment you have two categories of movement, one from zero to 10 million, and one from 30 to 50 million.
"We are in between, and in between nothing happens at the moment, there has been very little movement.
"All the clubs who live from the money which football generates do not buy.
"The only clubs who buy at the moment in Europe are ones who buy with money which is not generated by our industry."
Wenger added: "There are two categories of club - those who travel with sweat and those who travel with petrol. We are those who travel with sweat.
"I am very happy with the way we do things and with the players we develop, with what we try to achieve.
"Unfortunately last year we finished with a bitter taste in our mouths, but we know we were very, very close so we want to come back this year."