Honestly the entire collection is just yet another example of terrible design decisions. If you think it's gonna drop in price then you're deluding yourself. Nobody wants to do DRM because we all hate them. It might drop a little in price whenever there's a new story released but unless anet introduces some new way to earn them then it will only go up in price and not down.
It's a terrible direction for this game to go especially after they have already released a pretty unreasonably priced 1k gold charged stormcaller collection. I'm really disappointed that people are defending this design choice.
And no you won't be able to complete this collection at this rate because anet keeps releasing low-effort but high-cost items that will take them 1 day to design and the players half a year to complete
Instead of making people excited that they introduce new content, anet makes people want to not release content at all.