Amazon has them for $34.99. https://www.amazon.com/Weber-8835-Gourmet-System-Cooking/dp/B0044EQM9Q/ref=sr_1_1?ie=UTF8&qid=1495723190&sr=8-1&keywords=Weber+gourmet+grate
I had one and didn't like it for regular grilling purposes. The grill got rusted and pitted out quickly with minimal use. Plus I didn't like the middle falling out when taking it out. Pics of grate:That being said, Weber customer service was awesome and sent me a replacement grill when I contacted them. Sent from my iPhone using Weber Kettle Club mobile app