Usually sits late in the page, right above the pricing table or the closing CTA band. Showing every answer at once makes the page long, so questions collapse into an `accordion`, expanding one (or a few) at a time.
The best source for these questions is real sales or support data — objections like "do you offer refunds" or "does this integrate with X" are what actually stall a purchase decision. Questions that just re-summarize the product pitch don't belong here.
Past about ten questions, group them by category or add a search box. An answer that just says "see the docs for details" with no real content erodes trust instead of building it.
When to use
Use when there are real remaining doubts right before a purchase decision. With fewer than three questions, a plain list works without the accordion.