You would think if someone was interested in buying a domain, they would visit it first and if there's an inquiry form or contact info a buyer would use that.
Otherwise, they might be browsing a marketplace without a specific domain in mind, hoping to find one listed by searching keywords. Or...
Not something I would have hand regged if someone had told me it was available, without doing any checking first to see if there was some value or use case to the name. Only taken in 3 extensions. So nice sale!
I think the $18k was the cheap sale. The $125k was in range, only so many possible premium end users, and considering his roi over a few months of holding.
I read another blog post that said the Crossfire.com 18k sale in April was part of a bulk domain buy by the latest seller, which explains it a little. It's a pretty well known term that screams gaming and action to me. First Place Internet must have needed to raise cash by selling good .com's.