[2019] Jagex finally fixed the GE prices of dozens of high tier and rare items.

This is using actual sales data for the past 30 days and not player-created price checking data. Most of the time, they aren't aligned but that's because price-checking clans/discords/FCs have prices higher than what the items are actually being trade for through the GE or player-to-player trading.

There is an irony in that correcting guide prices to actual prices causes major activity in the trading in that item, causing prices to change dramatically. I tend to keep an eye on the new sales data and make a change in the short-term if necessary.