Quoting a house move means knowing exactly what is being moved. Traditionally that requires a surveyor to visit, walk every room, and write down the contents by hand — scheduling, travel and a report that lands days later, by which time the customer has often booked someone else.
Estimating from a phone call instead is worse. Customers underestimate what they own, forget the loft, and describe a wardrobe without mentioning it has to come apart to leave the bedroom. The quote is wrong before the van is booked.
And the cost is not in the object count. It is in labour: what has to be dismantled, what needs two people, what will not fit through a door, and how long each of those takes. A list of furniture is not an estimate.