A great way to track the price of YTs and buy/sell is through @portals_fi UI. I believe it's the top app for trading @pendle_fi YTs outside of Pendle's own app.
⚡️ @sparkdotfi YT-USDS expiring Aug 13: https://explorer.portals.fi/yield/ethereum%3A0x4eb0bb058bcfeac8a2b3c2fc3cae2b8ad7ff7f6e?range=all&search=0x4eb0bb058bcfeac8a2b3c2fc3cae2b8ad7ff7f6e