Whatever it was, was prolly pulled by the seller. (Brain Fart?) The cpu I bought should have been, but wasn't. I paid $50 (starting price) for an i7-3770K, 6 years ago (back then they averaged @ $250) because it was mislabeled as an i3-770k, so didn't come up in any search for i7 or 3770k. I almost (almost!) felt bad lol.
While I was watching it last night it went over 47 sold with over 10 left and suddenly it was pulled. My guess is that either (as above) the seller made a huge mistake, or more likely that it was a hacked account spamming a bad sale on someone's good feedback and got reported.