For what it is worth, Trek bikes are expensive. You are probably not buying a new adult Trek bike for $300. I went to their website and they have an electric bike that is $14k and they have cheaper bikes than this one that has a throttle. I think your price estimates in your math are low but I agree with your point. One reason that can make it hard to justify an e-bike is that they cost as much as a beater car but will get stolen pretty quickly in a lot of places if you are using it to commute/run errands/do anything that means your bike will be locked up for a long period of time.
For what it is worth, Trek bikes are expensive. You are probably not buying a new adult Trek bike for $300. I went to their website and they have an electric bike that is $14k and they have cheaper bikes than this one that has a throttle. I think your price estimates in your math are low but I agree with your point. One reason that can make it hard to justify an e-bike is that they cost as much as a beater car but will get stolen pretty quickly in a lot of places if you are using it to commute/run errands/do anything that means your bike will be locked up for a long period of time.