I would be interested to know if there actually was a bidding war for this, or if that was just the price that was offered.
Because if there was a bidding war, then that isn't an MMAO, it's an auction. In which case, why not just have a regular auction, and let everyone participate openly instead of some blind situation between a small group (or a single person)? You'd be even more likely to get a higher price in that case, with more bidders.
Just because someone used MMAO and got a high number for a sale doesn't mean the tactic was effective at getting the best price, as you have no way of knowing that he couldn't have gotten even more with a different process. And that's one of the specific weaknesses of MMAO - it's opaque and short term.
He got the highest bid of whatever one or two people were on the server that day and willing to make a bid. This is a large community, with a lot of deep-pocketed collectors who lurk more than they post. The more of the audience here you reach, and the longer you run a sale for, the more likely you are to get a higher number. And MMAO works against you in both of those areas.
People can call me a naysayer, but I have no gripes or whines against the OP. That's just an objective look at the tactic. It's a poor way to sell an item, especially one with a high value that the seller is uncertain of, and at the end of the day leaves a lot of uncertainty on both sides.
Sure, maybe you got a big number and you're happy with that and, and that's all you care about, and fuck my opinion, etc. But I'm not measuring the seller's happiness, I'm looking at the effectiveness of the tactic in general. How do you know that with one or two more bidders competing, you couldn't have gotten 2X more? The fact is, you don't.
If I'm selling a high-ticket item, I'd rather have confidence that I reached as much of the market as possible, so I know got the best number I could get. And a 24-hour period of people blindly throwing numbers at you doesn't accomplish that the way other methods will.