Passage Summary: Buying a sofa in separate pieces (modular) costs about double what a regular, one-piece sofa costs, even if they look and feel the same.

Reasoning: Modular furniture, which consists of separate pieces combined to make a whole, is significantly more expensive than standard furniture of similar quality and size.

Analysis: Since this is an 'EXCEPT' question, four of the answers will provide a valid reason for the price discrepancy, such as higher manufacturing costs, specialized shipping needs, or the complexity of making parts interchangeable. The correct answer will be the one that either explains nothing or suggests that modular furniture should be cheaper. You are looking for the outlier that fails to justify why a three-piece sofa costs twice as much as a standard one.