Saw a thread a few days back on a FT member stating he was trying to take advantage of a glitch to stay in S Korea at a low rate

I had a similar experience in New York (Algonquin - Level 8 hotel) and Marriott doesn't honour website glitches wrt low prices as you will read below

"I hope your day is going well. I am writing you in regards to a reservation that was booked via Marriott.com a few days ago. The Alqonquin hotel’s website experienced a glitch with its rates over the week of January 17th and a rate of $19.90 was inadvertently offered for sale.

According to the terms of our website found Here (#8) we will need to adjust your rate. We are happy to offer you a $199 discounted rate that includes breakfast for the inconvenience. If you decide not to use our hotel please let us know so we can cancel your reservation without any penalty. Once again we sincerely apologize for the inconvenience and hope to welcome you to the Algonquin".

Attaching that rule # 8 for your benefit as well
"Marriott and Ritz-Carlton Information may contain technical inaccuracies and typographical errors, including but not limited to inaccuracies relating to pricing or availability applicable to your transaction. Marriott and Ritz-Carlton shall not assume responsibility or liability for any such inaccuracies, errors or omissions, and shall have no obligation to honor reservations or information affected by such inaccuracies. Marriott and Ritz-Carlton reserve the right to make changes, corrections, cancellations and/or improvements to Marriott and/or Ritz-Carlton Information, and to the products and programs described in such information, at any time without notice, including after confirmation of a transaction."

so there's no honouring low prices even if you find them