Great question. We don’t treat “used” as one bucket. Before the RFQ goes out, the buyer says what logs and tests they need. If the seller can’t provide usage history, that’s stated in the quote rather than inferred. The market then prices that difference. Hardware with better records and more thorough testing should attract higher bids.
Yep, so basically the buyer has to trust the seller is honest and/or doesn't make a mistake (uploading the data for the wrong GPUs or something).