Nope, not if you build it before selling land and building houses.
Here in Sweden, it usually works like this:
The municilapity decide to develop some land, this includes public transport, in lower density areas a few well placed bus stops is all that is needed, they connect with the suburb center, and might even have a few lines connecting further away, the suburb center usually has a train station and a small shopping center, the train then takes you further along to your destination.
If you don’t build public transport during or before construction of the neighbourhood then it will obviously be a higher cost. But build it before or during construction and it will be quite resonable