Are there reductions or promotions on hand for bulk purchases of Wuthering Waves Lunite on Manabuy?

https://riversqwx590.wordpress.com/2026/01/27/wuthering-waves-top-up-price-comparison-which-lunite-pack-offers-the-best-value/

Are there coupon codes or promotions achievable for bulk purchases of Wuthering Waves Lunite on Manabuy?