I do want to point out that 'panicselling' out of fear over a suggestion doesn't mean the suggester is to blame; it just means that the owner himself was not confident he could get his buyout for the hat.

Price suggestions should not influence one's ability to sell an item. The same goes for hats that drop in price (though the situation is even more iconic for unpriced items); if the sales in the suggestion are correct and not countered by anything, then a suggestion to drop is fine. Someone complaining that they won't be able to sell for more just support the suggestion in such a case; if it was really worth more, it'd still sell for more.

I'm aware that suggestions do actually influence the market (especially when it concerns drops) and that people will be more hesistant to buy when a suggestion is open to lower something, but in reality (barring poor or incorrect suggestions of course), it just means that they needed the outdated, high price to be able to sell it off at a higher value, i.e they need a value that is no longer accurate to make people believe it'd be worth more in order to be able to sell it "at a discount" even though they're simply flipping for profit. I've seen wrong suggestions (where items were missing or where data was cherry-picked or sales were genuinely overlooked) become self fulfilling prophecies and I realize that that's a situation we don't want (and will try to prevent that wherever I can), but if the data points are correct and okay to use, a suggestion should not be an issue.

On unpriced hats it's a little different, but the concept is the same. If you list it at 400 you'll either manage to sell it or you won't. The latter case means it's very likely not worth 400, and probably explains why you were able to purchase it so far under 400. If 225 is really so ridiculous and if it is really worth 400, it will sell for 400.

The concept of "he needed money" as an excuse makes no sense here; he just invested in this hat and swapped it for another hat. If he needed the money he would've sold it (or whatever he paid/received for it) for cash :P.

The whole purpose of the site is to show what items sell for, to give people an indication of value. If you're confident that something is worth 400 and that 225 is outrageously low, then why did you manage to get it for 225?:P If you do not want a suggestion based on that, you're basicly saying you dont want others to know what you paid just so you can make a large(r) profit margin, which honestly is a lot more selfish and questionable to me than someone simply reporting a sale to provide market insight :P