Crafted precursor the Legend through collection - here are the cost breakdowns/guides : r/Guildwars2
Acquiring Your Legendary Weapon in GW2
Iron Horse Mine - Guild Wars Wiki (GWW)
The Inquisitor - Guild Wars Wiki (GWW)
Mechanist Ninn - Guild Wars 2 Wiki (GW2W)
GW2 - WvW Legendary Armor Guide - GuildJen
Keti - Guild Wars Wiki (GWW)
Destroyer Bow - Guild Wars Wiki (GWW)
Iron Ingot, Minecraft Wiki
Lava Imp - Guild Wars Wiki (GWW)