Adding to the other correct answers on this page, it allows the company in question to introduce a salesperson into the equation. Even if 100% of customers wer

Adding to the other correct answers on this page, it allows the company in question to introduce a salesperson into the equation. Even if 100% of customers were charged the same price, salespeople will be more effective closers than web pages most of the time. As this tends to be true only when prices are high, and given that salespeople are not cheap, I generally take this to be an indicator that prices will be high, almost certainly higher than direct competitors who post their pricing prominently.