Legal Question in Consumer Law in Illinois

Can't say. To be enforceable in Illinois, a contract for the sale of goods over $500 must be in writing, so at a minimum there must be paperwork on the original couch. The fact that it would not fit in the door is really your problem, however, because the sale of a couch, without more, does not carry with it a warranty for any particular purpose such as its not fitting -- that's something totally within your control. If he KNEW it might not fit, however, that's different. As to an additional delivery charge, most are under $100 and even a restocking fee is normally only 10% or another $100. So I'd try to settle this with him before he tries to take you to court where, even if you win you lose time and effort.....