This should not selectively exclude a low end based on buyers from 3 months later.

https://gladiator.tf/listings/607eac64a2d03e7375029275 Buyers were much lower at the time, and it had sellers galore at 200, supporting over 200 as a flat value would have been much too high at that time.

In general, when you're dealing with a shifting market, you should either wait until the market stabilizes, or use buyers at the time of the sale(s) to determine outliers. In this case, the market in april is not representative for the current market, or that of the time this was suggested at. It is usually better in such cases to use a range with the sales if you wish to update it already (so 150-240 here). It prevents accidentally using outliers from a certain time frame based on a shifting market.

I'd probably leave this outdated as a whole now, and wait for new sales.