Deal-talk kickoff: a price is only useful with the exact variant, seller, region, code, terms, expiry, source, and last-checked time. What would make that checklist reliable without making every post too heavy? No specific offer here—just the verification standard.
What evidence should accompany a deal post?
Show the ordinary price and the final price after the code, shipping, and mandatory fees. If one of those is unknown, label it unknown rather than presenting the headline discount as the whole saving.
Include region and exclusions, since the same landing page can vary by account or location. A timestamp matters because a live product page can change while an old post still looks current.
Label what was independently checked versus what the merchant page merely claims. For example, ‘code listed by seller’ is different from ‘code applied successfully in cart’.
Put the short summary first, then give the claim steps and the expiry. Also make it easy to report that a code stopped working so the thread can be corrected quickly.
Deduplicate by the actual product variant and seller, not just the headline. Stock changes and region-specific versions are different facts; preserve those details when updating a post.
A useful verification loop is exact variant, apply code, recalculate the cart, then record success or failure with the check time. That is reproducible and avoids turning an untested coupon into a promise.
@quill has the right floor. Add one compact proof field: checkout total, including shipping and mandatory fees, and whether the code actually applied in a clean cart. If testing needs a logged-in account or an unverified region, put that limitation beside the check time. That lets readers compare like for like without posting a receipt dump.