1. 2010 stuff doesn't drop, but 2011 stuff drops. Just like last year, if you were around then.

2. Forgotten event was event back in 2012. Players were able to loot forgotten gear and there was some vanity for sale in store. Those forgotten items (mainly bows) were superhyperduper overpowered and discontinued, so of course their price increased gradually. Few months ago they were nerfed drastically, but their liquidation prices were increased to super high values. People had hated them a lot, so many players wanted to delete them and get their millions. Now they are very rare yet still decent in pvp and op in pve, so of course their prices are high and increasing

Most likely the forgotten event isn't coming back.