While Menes was off securing the lands Alexander helped open up, the man himself was busy consolidating his power.
First of all, the various relief programs he promised were soon implemented, with the soup kitchens he opened having lines stitching for hundreds of meters nearly all day.
As for the cash money, funnily enough, the number of people coming to accept his stimulus package was more than the pre-war population of the city.
Which was particularly impressive given that Alexander had killed a lot of the original 100,000 inhabitants- be it during the siege, through fires caused by his catapults, and of course during the open fight.
And the explanation for his discrepancy was, one- there were second comers who tried to claim the aid twice or even thrice, and two- there were people from other parts of the country, such as the nearby villages.