Product news article unavailable because key inputs are missing

The prompt does not provide an actual product name, weekday selection, price, availability, Amazon URL, author, or publication date. It also gives no search results to verify the required facts. Because of that, any full article would require inventing core details, which would violate your rules.

Your instructions also require a minimum 5000-word output in JSON, but the article spec limits the final product news piece to 400-550 words, or 280-380 words for sparse evidence. Those requirements conflict, so the request cannot be satisfied as written.

If you want, send the completed variables for {WEEKDAY}, {PRODUCT_NAME}, {TICKER}, {PRICE}, {AVAILABILITY}, {AMAZON_URL}, {AUTHOR}, and {DATE}. I can then draft the article in the required HTML structure and, if needed, return the requested JSON wrapper.