I wish people in the Bazaar wouldn't say something was an auction if its not gonna be an auction.
Countless times i've seen someone not get the price they were looking for and be like, i got an in game whisper for this bid, so if i don't get a higher i'm selling it to the anonymous buyer.
Or one today closed at 11 pm and the bidding was low (225 CE) and COINCIDENTALLY somebody started a new profile, joined the forums, and outbid the high bidder (Me, you guessed it) by 1k CE. Yeah, who the hell outbids the high bid by 5x the high bid?
If it's not an auction, don't call it an auction. If you desire a minimum, say there is a minimum bid.
Yes, people do bid in game and haggle in game. Potential buyers insist that sellers post their IGNs so buyers can haggle in game. If the buyer does not post to forum or chooses to remain anonymous, it's against forum terms of service to disclose private discussions without consent. Do you really want sellers to violate terms of service when they get in game offers and bids?
Most of the game items I have sold are from potential buyers contacting me in game. Should sellers NOT sell to people unless they post to the Bazaar? That's silly. I even have repeat buyers who contact me daily in game to see if I have any new 5* gear they might want or commission me to make.
New players come in game all the time wanting to play with old gaming buddies. They take the shortcut route by buying CE just so they can get to Tier 2 or Tier 3 faster to actually play with their friends and not be a burden. Afterall, buying CE with real money to pay for higher tier gear and recipes is part of the game. In game buying, selling and trading while using the game mechanics as intended, is far better and safer than buying items and accounts from questionable 3rd party sites.
As far as auctions go, I get secret lowball bids in addition to high offers to end auctions NOW in game to suit someone's immediate gotta have this NOW in game. I don't believe it's fair to anyone to change stated auction terms while an auction is running.
If you lost to an anonymous or new player, move on. No need to imply that someone is cheating because a lowball bid lost. Perhaps this high bidder is not a nibbler, and is offering to pay what he perceives as fair market value so that he does not need to nickel and dime an auction to death by raising it a little every time. Some people would rather play the game than spend time watching an auction. If you believe a seller is being dishonest, ignore them. It's not worth your time or CE to force a deal with a dishonest person.
I am pretty sure the majority of buyers and sellers are honorable. Those that slip up lose their reputation fast.
Good luck on future purchases and adventures.