I noticed that the BC250 ($114) can be purchased for $87 with a coupon ($12) and card discount ($15).
While eating lunch, I watched some related YouTube videos and saw news about the 40CU unlock. Since there was a rumor today about a steam machine release in the US, I looked into it and ended up with a payment of $131 for BC250 + open case + power supply + fan.
It's said that Qwen is worth using; I'm looking forward to it.
Sniff. I need to practice opening fans.