Fixed an issue where stale or wildly inaccurate stable prices could cause quests to request items that are way more expensive than they appear. The system now validates stable prices against current shop listings - if a stable price is too old (30+ days) or doesn't match reality (e.g., shows 59k when items are actually selling for 999k), it will use the actual lowest shop price instead.
This prevents quests from asking for unreasonably expensive items and gives you more accurate price information everywhere stable prices are shown.
What is the "stable price"? It's what we use to make determinations around the site that use our years of purchase information, auctions, etc to come up with for each item. This is usually close to what they are in user shops, unless they get bought up or something funky is going on.
