Yes, amber-hk.com does offer site-wide discount codes. There is a 75% off sitewide coupon that was available as of the last update. Additionally, there are other offers such as 5% off on your next purchase, and a 10% off for subscribing to the Amber Sceats HK Newsletter. Please note that these offers may have expired or changed since the last update. It's recommended to check the website for the most current promotions. If you subscribe to their newsletter, you can receive the latest deals and promotions directly to your inbox. Remember, discount codes may have certain limitations or qualifications, like a minimum order amount.