Amazon's pricing-error detector flagged your listing — the price is outside the historical or competitive range for this product. The listing is suppressed until you confirm or correct the price.
Amazon protects buyers from typos like $5,000 for a $50 item. It also flags sudden 90%+ discounts and prices vastly above other ASIN prices. Setting min_seller_allowed_price/max_seller_allowed_price acts as your guardrails.