It's hard to evaluate because they don't have a real importance in the meta game and it's more used as a decoration and collection item
So what defines price are basically rarity + meta game stuffs (as achievements)
Example (prices in Antica marketing)
Falcon greaves: 115kk
Falcon Plate: 50kk
Falcon Battleaxe:7kk
All these Items, have the same rarity, in theory but different prices based on meta...
Items we don't have Meta the price floats a lot! because, people don't look for them.
Example:
Ancient Watch:50k (boss only item and a bit rare but with no influence on meta..)
Amazon set can only be found during silents orc invasions, Thais Farol, and maybe Femmor Hills
These raids use to be more a legend than a true story.. But I lived it once. and I killed a whole raid all by myself in the Thais Farol, AND
I didn't drop any item..
So the rarity is not trivial. we never know whe these raids happens. neither how often.
but all this legend and story make these items pretty valuable..
Today (17/April/2022) this is the situation in Antica:
Shield (2kkk~ 800kk)
HELMET (215kk ~ 330kk) Obs.: (there are selling story of helmets for 230kk )
Armor (454kk ~769kk)
but as I said they are useless in game, but they have a ton of stories, and meaning..
I don't like to use wiki prices. because they are not real and in a ton of times they don't reflect the reality of the present!
Obs.:
Price Tibia coin today: 26k