This picture is a good way to explain a price difference: Same kitchen, same quality, same joy, but not necessarily the same price: For example, the visible doors of the island: are these doors with normal cabinets (two shelves) behind? cost-neutral With drawers behind? 4 cabinets, could make 1000€. Or are they actually drawers, not clearly visible to me, then you can possibly already plan for a 1500€ surcharge. In the built-in tall cabinet line, I can see an upper panel: height approx. 20cm. Is this just a cost-neutral panel? Or does the budget allow for flap doors to be installed there to create more storage space? You wouldn’t see the difference of ?500€?, but the kitchen would have more content. By the way, for me, the two compartments above the refrigerator are a no-go, considering that effort was made in the line. Sink: seems to be very narrow after all: it’s actually enough, especially if there is also a larger sink in the utility room. But some don’t have that, so you have to pay a bit more for a larger sink. Compared to the thick countertops, the narrow countertop also hides an additional cost factor. The side panel on the right side: costs extra. In planning a cheaper kitchen, you would omit this. I believe a baseboard is also more cost-effective than fancy legs on which the carcasses stand. The conservative kitchen planner, who prefers wall cabinets with a crown molding, pays for the elaborate moldings above and below the wall cabinet. Also often included with the kitchen builder: the lighting - in this example, you take care of the lighting yourself. But this amount makes the kitchen studio’s bill cheaper. By the way: once this kitchen is in use, the island will look quite cluttered, because sooner or later a knife block, note pads, oil and vinegar roundel, salt and pepper, little machines, etc. will collect on the countertop… for me, an element is missing there.