There are a few things you can do to avoid this pain when selling.
Asking prospects to prepay for your services is one of them. It mutes the pain. It also provides you with cash flow and avoids other headaches.
Bundling offers will also work. The brain likes bundles, we have a hard time pointing what costs what in a bundle.
Want to experience pain when buying? Try sushi. Each piece has a determined price. Very painful.
Taxis follow the same pattern and are very painful. Why would you follow these patterns? You would just sell less.