price here appears to be exactly the same as on amazon. (https://www.amazon.com/Samsung-Galaxy-S21-5G-Version/dp/B08WF93R89/) – 562.99 on today’s date. (actually looked closer, it’s 0.04 cheaper on amazon)
and if the amazon one is just “renewed” and not “s&d”… given my experience with the recent s&d from woot, i prob would suggest taking your chances with amazon.