A listing at 500 is irrelevant honestly, mostly because of it being unsold for so long, and I know personally from the Vicious Vampires Mean Captain I've had listed at the same price as George since last Halloween, he hasn't moved it down from 300 keys, despite it being unsold on Marketplace.tf for $175. If the one on Marketplace sells for $175, which is like, <100 keys, I can't say "well buyers are 60k, and my listed is 300k, so this is a quicksell right?"

Even if we wanted to apply the whole "we have to wait for a third sale to resolve discrepancy", there are no other sales, this one for the Noh Mercy is bulk and is unusable, and if George is unable to sell for 500k in 5 months, (and it's worth mentioning it was actually picked up 9/22/24, so happy one year anniversary to George's SS Blast Defense!) with it being listed for possibly longer, that is leaning more towards it being overvalued.

More than anything, this thing is tied to the value of the Strange Fully Charged Starlight Sorcerer, with the person who bought it used it as mixed, but it was not considered valuable enough by the buyer nor the seller, especially given their willingness to dump it for that, and it being used as bulk in the following movement. There's no competition in the buy orders at 181k, both are relatively recent, and while that does bound our lower end to that value, just because the only seller has wanted 500k doesn't mean it will ever get 500k, so pretending this has a massive range because it was overpaid for or could have inflated buyers is disingenuous at best.

The slander's rude though, as I told you it took close to 50 suggestions just to price the Noh Mercy to get a determination of what this was paid for in that trade. If I wanted "easy" suggestions I wouldn't have gone out of my way making this many complicated suggestions and related mini trains to validate this secondary sale. Which is ALSO crazy, because that suggestion (the Noh Mercy) is also running a risk of re-suggestion due to having a high outlier sale at 1490 that might need to be excluded, pending mods input. Noh Mercy's quite often have large ranges, so it's not uncommon, but it still requires a verdict from them. If it was an outlier worthy of exclusion, that would mean the Noh Mercy's only two sales have been 780 and 846, which would price it at 813, and would mean the BD's value in this sale (yes, yours!) would be 153 keys, below buyers. This is of course, using this BD in pricing the Noh Mercy, and if we were to exclude that since they can't use co-dependent pricing, then the Noh Mercy would have a single sale of 780, which would then price this at 120 keys, also below buyers.

So our only uses of this "500 key" Blast Defense have been mixed overpay for a speculatively valued item, and bulk, both of which haven't reflected well on it's value. We also have a 500 key listing unsold for some period between 5 months and a year, depending on if George has relisted or not.

This isn't to say you can't speculate on it possibly receiving more, but until someone pays that amount, it's just speculation. You keep referring to an actual regular sale, which this item has not received in a long time. Until someone is willing to fork over 500k~ for one of these, you can only use the available movements to make this, which are stated above.