1. A company introduces a high-priced option (the "decoy"), often not intended to be the best value for most customers.
2. This premium option makes the other plans seem like better deals in comparison, nudging customers toward the one the company actually wants to sell.
In this case for Chat GPT is:
Option A: Basic Plan - Free
Option B: Plus Plan - $20/month
Option C: Pro Plan - $200/month
Even if the company has no intention of selling the Pro Plan, its presence makes the Plus Plan seem more reasonably priced and valuable.
While not inherently unethical, the decoy effect can be seen as manipulative if it exploits customers’ biases or lacks transparency about the true value of each plan.