Guild Wars 2

Anyone has any idea why those cost more than cores?
I cant find any recipe or anything that would make them so valuable, yet molten shard is around 16s while molten core is 4s.

Supply of these are going to be much lower than cores.
You are only going to get shards and fragments from specific maps.
Cores come from champion bags, dungeons chests and temples.

Khisanth.2948:

Supply of these are going to be much lower than cores.
You are only going to get shards and fragments from specific maps.
Cores come from champion bags, dungeons chests and temples.

But what use they have to justify such high prices? If there is no high demand for them why are prices so inflated?

People buy them to help level themselves up crafting. This page suggests you buy 16 of them: http://www.guildwars2hub.com/guides/basics/guild-wars-2-weaponsmith-leveling-guide-0-400

http://www.gw2crafts.net/weaponcraft.html too, not as much but it seems despite those prices they are still cheaper than the alternative.