The price of expensive items starts to OSRS GP plummet because players sell them in order to purchase pking armors. This happened after the New Old Wildy was released. BGS declined a lot, due to I think you ought to know why. (Weak specifications that utilize all of the energy that is spec in case you didn't realize) Fishies are the culprit, it's not just a update for F2P like Charizard said. P2P also have them and cause the price of fish to plummet. They also have P2P bots.

Armour that costs a lot of money is breaking because they do not get destroyed when killed in PvP anymore. If someone has a PK of full Bandos or somethingelse, they'll decide to sell it , as they don't really need it. In the past Bounty Hunter game the armour would have been destroyed and then replaced with an insignificant amount of money. With Wildy PKing however, the expensive armour is never destroyed. They just get transferred to the PKer who defeated the other.

DFS is experiencing a crash due to DDef. Godswords/whips are crashing due to increased numbers of players being Chaotics (been an entire year since release of Dg and it's still crashing) The rest of the game is also crashing because of the huge amount of BOTS. Sorceress Garden bots have destroyed the prices of herb.

Lol? Ddef was introduced like 3 months ago, and it was at it at about 5M more. However, I personally do not understand. I really don't know why the more GP means more demand, isn't it? Why would one expect to see a DFS decrease due to increasing GP? Only possible reason DFS goes down is higher supply, which isn't likely, or, less demand, which it is, in turn, unlikely since people are able to buy more GP.

It could be that Dungeoneering shields are becoming more sought-after and Divine also Elysian Spirit Shields are becoming more common, to the point of where the majority of RS populace (200Kor more) have two or more. or OSRS buy gold both. All Day cough.