That seems pretty expensive to me, but maybe that's typical of toll road prices these days. There are none where I live, so I don't have anything to compare to.
It's unfortunate that it's effectively a regressive tax.
There's an alternative that I like in principle, but I'm not sure if there's a way to actually implement it that wouldn't be a dystopian surveillance nightmare. The idea is that everyone in a region gets a fixed number of "car trip tokens" per week. You use one token every time you drive somewhere, regardless of how many passengers you have. Parents get tokens on behalf of their children, because they have to drive them places sometimes.
Unused tokens may be sold to people who want them through a public auction system. Employers who require their employees to be in the office must provide their employees with the tokens. This shifts the burden of transportation externalities on to the employers. Employees can either use the tokens or sell them if they decide to take public transportation or ride a bike instead. This gives them an incentive to not drive even when they're provided tokens for free.
The total number of tokens in the system can be set low enough that congestion is rarely a problem.
Handling out-of-state cars is a problem. Maybe they can just pay a fixed toll if there's no interstate agreement set up.
Maybe there could also be some rules like non-peak trips only use a half token, or oversized vehicles use 2 tokens.