Not posting a price for a item being auctioned, why?
 

https://www.pon.harvard.edu/daily/de...-negotiations/

Advantages of Using Anchoring in Negotiation

If you value only the economic outcome of your deal, make the first offer in order to anchor the negotiation in your favor. But if you value satisfaction with the negotiation process more than the outcome itself, you may want to avoid the stress and anxiety of making the first offer.

because the wiki lists a lot of recent prices of items. Also I assume when someone does not list the price they might be open to negotiation.

By not posting a price there is a chance people will offer you more than what you would have asked for. Also if you post a price people will almost always offer you less than your asking price because people like to feel like they got the better end of a deal.

Sometimes, people do that if they aren't sure how much they can get, or they are fishing for a random high offer. They also do it to avoid the stress of choosing a price to post, posting it, and possibly getting a counter-offer that is lower than they want, then being forced to say "no" (hard sometimes) or "how about X" (also hard) or "ok fine."

Rather than be annoyed by auction posts without price, you should use them as opportunities to practice making an offer that you would be willing to pay. You could lowball to some extent.

If you post a price too high, you may discourage otherwise interested buyers. If you post a price too low, you leave money on the table. Rather than trying to play Goldilocks, you’re better off getting in contact with everyone interested in the item and then starting the negotiation process.

Because i'm lazy : I log on my mule , link stuff in my bag , hang around a bit and if no one is interested i log out. I dont want to check on wiki the average price on those 20 items, send me a tell asking for the price and i'll go take a look.

Personally, i will send one tell asking for the price sought, if the reply does not include a price i never respond again.

I’m not much of a trader, but generally I like my customer to feel like they paid a good price (low), but without diminishing their purchase by making it feel like a handout (many players seem to want to feel they ‘earned’ it, so not ‘too low).

Usually I only sell things to clear inventory slots and if it feels like the item would be too useful to another player to just vendor/destroy (I’m too sympathetic on such things and will feel bad if i destroy something someone might have wanted) so really am generally happy to just be rid of it for a good cause, and make at least the vendor value, you know?

Sometimes i’ll sell rarer items and I might throw on a higher price tag just because I want to make sure the person getting it really wants it.

If I posted a price I wouldn't get unsolicited EC pro tips for free:
"PC Item?"
"Reasonable wiki average"
"LMAO good luck"