I'm sure most of you guys know by now but Arenanet sent out chests to all players who made it part way through the ancient karka event from the Lost Shores patch.
This means that there are a lot of folks who had a chance at a legendary weapon percursor. A lot of those folks got lucky.
I'm not sure if you followed the named exotic/percursor trends after the lost shores event when folks speculated precursors would plummet so sell now. Well this didn't exactly happen. Precursors took a hit in value but not by much.
In my opinion that hit had more to do with rumours of further tweaks to the precursor system.
So, for those looking for a medium term investment (a couple of weeks) buying up legendary precursors is pretty good money. I won't say long term because there may yet be changes to the system that means they do plummet in value - so it's best not to hold onto them for too long.
Perhaps others think the same way I do, I'm not seeing the same movement as last time. In any case, keep an eye out for any news about changes to precursors if you choose to get into that market!
Also - keep an eye out for wintersday news! I feel like teasers are late but I think it's because the first speculation started freakishly early! :)