I find it strange that they are out-bidding each other like this when there are over 8 days left. I am not too experienced with bidding, but I thought that the normal strategy was to maybe place a placeholder bid if there is no activity, but more generally one waits until the last second to set a reasonably high bid. Going on a 1v1 with fast out-bidding over a week early seems bad for everyone except the seller. Perhaps someone can explain.
I noticed the same - it is strange. And a lot of times they're raising the prices much more than necessary to outbid each other.
In special, half of the bids come from a single person, j_s_0e6b87. They're bidding since the beginning, and seem to follow no strategy - sometimes bidding $10 more than the top bid, sometimes way more. Either they're stinking rich to the point they don't care about the money, or they don't really care about the address, and want to inflate its price for whoever actually buys it.