Apparently a typical PC is 1985 cost upwards of $5000. The C128 was $299. So for rich people yes it may have made sense to pay a 15x premium to get hold of tech “from the future, today”. But you could have easily had both. And for a child, both machines would be entirely obsolete by the time the child grew up and entered the workforce, so I would question how much advantage you were really buying.