I'm of the opinion that writers should make it a habit in pieces like these to always include prices that have been adjusted for inflation. In this case, $2,000 corresponds to $6,731.61, which provides better context for the story.
Upgrading with a hard disk, a second floppy drive, or upgrading the graphics card was common.
Back then, you had 1 phone which cost around $50 a month in inflation adjusted dollars.
In California, there certainly was. The US economy had already started its decline, but from such a high that well-to-do Americans hadn't noticed. By contrast, because Europe had had to be rebuilt after WWII, the general populace had benefitted far less from the postwar boom.
In 1982, my family had a relatively comfortable middle class existence, but buying a home computer that cost (at the time) about half as much as a one-bedroom apartment would have been absolutely unimaginable to my parents. The ZX81 they bought for me cost £99.