No way, with an AH system you end up with one or two people forcing everyone out of the market. The best "seller's market" was actually the market ward with no price listing. You earned customers based on your consistency and their loyalty; not whether or not the price was 1 gil lower.
With the price search I've already been forced out of my main crafted items because I no longer found any reasonable profit in them. I now go around looking for little niches that aren't being used up at all, and then when someone does enter them and then sells their items for some pathetically low value, I leave.
Price search absolutely killed off profitability in dyes, for example. I don't even craft them now because there is so little of a profit margin.
Also FF11's auction house system is one of the worst "AH" systems that I know of in any MMO. I absolutely don't want that.
I believe that market wards have actually lost some of their viability with their improvements because you get forced into making niche items; rather than making a broader spectrum based on the ward you're selling in and the ability for people to just search explicitly for what they want. Previously, it would be easy to sell lots of different things that people found useful, but now don't even go to that ward because they're so categorized.
This means as a carpenter I've never made bows for sale after the recategorization because I had found my easiest and most effective profit margin making caster weapons; so I was relegated to the Spellcraft ward; where no one goes to find bows.
The other weird thing I find about the market wards post price listing is that people keep lowering their prices even though there isn't necessarily a demand for the item. In what I'm selling right now I sell one item at 100,000 gil. I made 4 of the item and sold two of them over a period of about 5 days or so. Lately, two people came in and posted the same item at 60,000; and both of them almost instantly lowered their prices to 50,000 because it didn't move instantly. This isn't because their prices are too high [I think I'm about 20k too high, and they're about 30k too low], but because of incredibly niche demand for item.
The market wards don't really work as is, but they can work; and they definitely bring in a more fun aspect for crafters.