I agree, but I think it buys more than it used to.
On our road home to Butte from Phoenix this past week quite a few places were advertising for help. At convenience stores the starting wage appears to be $21.00/hour.
So $100 worth of stuff is now equivalent to about five hours of work. When I was a sophomore in college (1974), I worked on a farm for $15/day and they were long days. Within a couple years I got a job at an appliance store for $1.25/hour.
Compared to what my wages would have purchased then, five hours will buy a much better radio, antenna, and cable than it would have then.