Tikat Shop is feature only in Gameforge version of TERA, added in Patch 83. It seems the shop was added as Federation Bills Shop to EME (North American) version in patch v98, but it was never activated.
It works like premium currency in game for subscribers. Player with TERA Club subscription gets daily 250 Tikat that you have redeem from TERA Shop front page and claim from item claim. Tikat was also given least in Christmas Calendar event.
Tikat can be spent in Tikat Shop (Main Menu->Shop->Tikat Shop).
Tikat Shop sells:
- Elinu's Tear (known as Crafters Cure in NA), which restores production points for crafting
- various XP boosts
- Adventure Coins
- Crystalbinds
- Semi-Enigmatic Scrolls
- Shape Changers
- hair colors
- permanent dye
- fishing baits
- pet food
There have occasionally been some special stuff like pet and Mournwing mount.
Interestingly, Tikat is known internally as Federation Bills (seen in system log) reminiscence of Tikat from NA servers.