In 1987 I would be more confused by the concept of a phone costing money AT ALL, let alone asking why the fuck it costs $800.

Remember, in 1987, car phones were starting to become a thing, cell phones were either not yet invented, or just barely invented. Either way, only businessmen had them, and only because they needed them for work.

99% of people had only a landline. And you didn't buy it. It was provided by your telephone company.

So the idea of a phone costing $800 would be crazy talk.