First of all sorry if my grammar is bad, english is not my 1st lenguage.
Ok, so with this new patch we had a change on the prices on some stuff, and it made low level players life too expensive for no reason, reading why you did it made sense, in a world where everyone is rich you dont feel the increment(the other CBT), but when you have a pretty new economy and you factor in the inflation of another economy problems start to show up, even if you inflate the prices gradually it will make it so newcomers cant compete, and you need new players to keep your game alive since you cant just rely on the old ones to play forever, players go in and players go out, thats how mmos work nowadays.
How do you fix that?, well heres the idea, low level players dont have to spend the same ammount for the same services, services scale off your level, lets break it down. disclaimer: I am not a high enough level to talk like i know everything about the game this is just how i see it having played mmos for almost 15 years.
Attributes
This is one of your best ideas, as such i dont think theres a reason to change it too much, keeping the prices fixed makes it so you dont have to spend all your money learning them early, since it would cost more if you are high level, so learning them all early would be the only choice.
Repairs
Scale with the level of the equipment; i didnt notice a change while leveling up, it was almost always 600-800 to repair my whole equipment, maybe it already scales i just didnt hit a point where it was noticeable.
Now, it has to scale with equipment level rather than player level, so you dont have high level players giving the gear to low levels so they get cheap repairs, i think giving free repair for gear 15 and below would be fair also since that way they can use the silver they have to try other features like attributes, gems etc, talking about gems.
Gems
Again, the prices should scale depending on the level of the gear, and i think giving free acces to gear 15 and below might be worth a try, it would incentivice players to try the feature while they are new without having to spend all their money, getting used to how it works etc.
Upgrades
Implement anvils for every level of gear, having only one anvil makes it so they are either too expensive for low lvl players(you want to people to play the full experience since the beggining) or too cheap for higher lvl ones, it would make it easier to balance also since you can move around the price of one anvil without affecting the other tiers.
Warps
This should probably scale with the level of the map you are warping to, the exact amount its something i cant give you. Also you should make the klapedia warpstone more obvious to new players, almost all of my friends didnt notice they were able to teleport to klapedia for free once in a while, they were either running to the statues or, even worse, using expensive warp scrolls.
Final
Thats all that came up at the top of my head, there might be other places where you can implement this, the basic concept is, keep prices low for low level players so they can get to experience every aspect of the game since the beggining, while charging more to high level characters since they have the founds to use do it.