The prices didn't rise at all since the server's start 2 years ago. And that's despite the fact they now include 23% VAT, and the inflation over these 2 years in Poland has been around 20% (15.6% June 2021 to June 2022 oficially).
Also, if you compare the prices to Tibia or any other OT, please take into consideration that Tibiantis offers nothing else but premium. It is the only source of the income, while for them premium is just a small part, cause most of their profit they make from the store. Tibiantis has no store at all.
That's true, but they have had many people to work just on that. The content development team, story writers, graphic designers, testers team, and so on. While we have to do everything with just three men, who don't even all make a living from Tibiantis.
Now let's consider making the whole update from scratch. From an idea, through a general concept, new lore that has to be consistent with the original, monsters ideas, quests, NPCs, spriting, writing, mapping, testing and so on, to the teasers and the final effect. Let's say it's 3 months of a full-time job for us (which would be quite fast if you compare that to the real Tibia updates). But the problem is that we cannot focus on the update only. We still have to be actively banning cheaters, solving the current issues, dealing with the daily affairs, working on other improvements, doing the advertising, answering players etc. So if we can only spend a quarter of our time on the update, the whole process takes four times longer, easy calculation.
Apart from that, don't forget that Tibiantis is meant to keep the core of the old Tibia. Updates are only to add some "freshness" to it. It's never been our target to change the game completly by releasing as many updates as possible. The foundation has always been the following: accurately recreating the old Tibia (in terms of mechanics, balance etc.), stability, and the anti-cheating policy. Adding new content is further on the list.
But we do want to and we do update the server, who says we don't?