A Treasure Beyond Worth

My players are a little surprised by the wealth of their PCs in my current 5e campaign. Or rather the percentage of their wealth that is consumed by iron rations in preparation for an expedition. Money was such an insignificant part of Pathfinder with their loose change they found beneath the cushions of their couch, they could afford months worth of meals. Now that buying magic items is not assumed, and money from treasure has been reduced, they’re stunned by the percentage of their wealth tied up by not dying of starvation. And they’re continually baffled by how peasants can survive. Of course, commoners aren’t buying preserved food, but the cost of rations is rather high.