Actually no, LLMs (preferably tool-using LLMs that can themselves do web searches and price lookups) are a great way to shop, especially if you're looking in a category and don't know exactly what item you want.

You just say "I want to find some headphones" and it makes you some recommendations. Or it helps you nail down what you're looking for first and then gives you options at various price points. I've found this useful when shopping for cars, computers, tourist activities, and much more.