I mean, we will try to reflect common trading points as much as we can. We allow collectors purchases (that are in reality outliers) if there are no other usable sales, and then we report the sales as is (just like we do on hats where the value seems to be on the low side). That does not mean that the sales can't be outliers in reality; they are in fact still very likely to be just that. Not saying all collectors purchases are outliers per say, but a collector generally pays more than anyone else would for a hat if they need to, and when that happens, they deviate from a common trading point almost by definition :P

While there are exceptions, many collectors still end up selling their hats at some point (some sooner than others; it is not that uncommon for collectors to want something else after a few months). More often than not, that would mean they'll discount the hats compared to their bp price (what they paid), whilst still selling above what a hat has always sold for, or they use the hats to overpay for something else. Someone that buys them or accepts the overpay offer could mistake the collectors value for a value you can easily get for the hat (the actual common trading point). I mean, look at the demonflame buto; it has been pretty much stable for 3 years around current, and that sale from early dec supports that value. It suddenly selling for 500 while it has always sold for ~225 shows that on a wider timeline, 500 is definitely an outlier, and the fact that it is a collector that also bought the other ones for a similarly high seeming value gives a reasonable explanation as to why the sale is so high :P

This is why Im hesistant to blindly use a collectors purchase to reprice something, and why Im convinced that factors like other sales should be taken into consideration when making suggestions based on such sales. The more drastic the proposed change is (compared to an overall trendline), the more hesistant I would be to accept and the longer I would wait/the more issues I'd have to give precedence to the more recent sale (which is what we usually do in less extreme cases).

Don't see this as me taking pleasure in denying suggestions because that is not my intention. It is actually more my goal to prevent situations like that burning bitey a while back from occurring :P.