It seems that close to 50% of bids on .IO domain names at Flippa are fake.
To say that there is a trainload of fake bidding going on is an understatment. Some auctions are ending at low to mid $x,xxx, only for the bidders to move on without paying. When re-listed, they are selling alot lower with some of the same bidders not going above 10% of their previous bids. The fake sales are creating hype, a boatload of new listings with many, many disapointed sellers that were hoping to replicate the success of these deadbeat auctions. Some of those that actually go through, get pushed to friends/contacts.
The real auctions that go through to real buyers and the good .IO terms selling for mid $xxx to low $x,xxx. The fake auctions are easy to spot - they are average terms selling for crazy prices - high $xxx to mid $x,xxx.