Hey there buddy! I'm sorry to see your post, however I have some suggestions for you.
For your money problems go
here.
That link will direct you to the FiestaHQ Wiki, which is a very good source of information on the game. Potion prices range from low to high and if you are looking to buy some from player vendors, you will see some high prices because most players these days know that potions are very valuable and so they can sell for high prices. Kill monsters and look for the Healer NPCs to attain potions as an alternative.
Earning more money is a challenge but CAN be easy to get if you know what you are doing. The guide I linked you to has the best answers you will get anywhere else. Kingdom Quests, in my opinion, serve as an experience booster. To get money, I suggest merchanting and questing.
As for what will renew your interest? The answer could not be any easier. Outspark will be releasing a lot of new features in the next week or so. See this
link for more details. The new features will include in-game wedding, new maps, Apprenticeship, and a whole lot more. Fiesta is only boring if you make it boring. The GMs are very open to new ideas and suggestions to making Fiesta an even better game. If you are bored, get your character up to the level cap with the best enhanced weapons. Go help all the lower level players (from experience, that has taken a lot of my time). There's lots to do and I hope you find this post adviceful. If you need me, I'll be on Teva server.