Just for you guys, here's a list of the info. Rare Item vendors are currently available in Vaaka Kala, Aranna; Haqiq Cedony, Folivaria; and Chalan Vaara, Kalavana. Here's a lovely little chart:
Item Cost from Vendor Max per Vendor Max in game
Antique Spigot 250k 111 999
Rube-Shaped Potato 500k 83 750
1 million currant trophy 1mil N/A N/A
Factory Defect Chick Cubimal 1.5mil 59 525
Highest Quality "#1" Imported Glitchmas Yeti 3mil 33 300
PS wow that was a pain to type up. I wish we had HTML tables, at least.