The cost of the seller must match the sales point

This concept reveals the economics of selecting a seller within the new architecture of a commercial website.

The seller is part of the sales point's cost of goods sold. Therefore, the goal is not to place the smartest possible agent on every website, but to choose the cheapest level of seller that creates the required result.

On a ready-demand website, an expensive Expert can turn into a very expensive checkout counter. The buyer already knows what they want, and value is created by speed and the absence of friction.

On an expert website, the reverse mistake is more dangerous: a cheap Order-Fulfiller saves on agent costs, but fails to reduce buyer uncertainty and can lose much more gross profit.

In AI systems, the cost of the seller is determined not only by the model name. It is influenced by context length, reasoning, number of tools, memory, access to product and customer data, knowledge, frequency of escalation to a human, and maintenance costs.

Therefore, first, the type of commercial website is determined, then the required seller archetype, and only then the agent architecture.

The final check is whether the seller creates positive incremental profit.

Return to the big picture: The AI seller changes the nature of a commercial website.