Ask Why does a client act shocked by the invoice when the price was clearly agreed on before work started?

[Brendan]

One of the most confusing experiences in freelancing is sending an invoice after completing everything as agreed, and then getting a surprised or resistant reaction from the client. The number was not hidden or changed, it was part of the agreement before any work began. Yet somehow, seeing it on paper makes it feel different to some clients. It raises real questions about whether the initial conversation was actually taken seriously on their end. Has this happened to you, and how did you respond?