Not sure what you mean by ribbon? Do you mean this? The $357 price point showing below are JX fares. You aren't going to be able to get JX fares on QR coded flights which will necessarily involve QR fare filings. Fare filings and price points will often differ between partners. Cheapest QR fare filing applicable to date below look to be $611. You can get fare basis codes at checkout screen from fare rules. The $611 QR fare I see on SEA-BKK on this date would be a QR N Class fare and has a fare basis code of NLR5R1RE. You could try quoting on ITA Matrix which will give you both QR pricing and QR fare basis codes involved to see what it sees.