You can put a price on perks. Food? Provide something that matches what an urban centre provides for free? €10 per day by 240 days ~= €2,500 extra post-tax inco

You can put a price on perks. Food? Provide something that matches what an urban centre provides for free? €10 per day by 240 days ~= €2,500 extra post-tax income per year (which you can round up to €5k pre-tax). Companies don't like when you point out how little the perk is actually worth.