The expenditure part of the rebalancing is the remuneration of the arbitrator. With one operation the arbitrator receives hundredths of a percent of the transaction amount while paying the Ethereum transaction fee. This amount is significantly less than the benefit of rebalancing. Also, the cost of rebalancing is reduced with the increase in the capitalization of MultiToken. It does not have to be just your deposit, every holder of this MultiToken increases its capitalization.
Now we are conducting a large number of tests and will soon lay out the test results with exact details.