Exp Formula
The formula currently is fine, but the issue I have noticed is with the first 10 levels or so. The player gains levels way too fast, which feels off when they can barely afford any equipment, and they are not able to kill crabs by the time they are level 12 or so. The forumla I wrote: ceil(30x^2.2 + 20x) where x is the player's level. This formula shows how much exp the player needs for the next level. This formula has the "+ 20x" which help ensures that there is some growth at the start. In comparison to the other formula, I think it is somewhat similar, but of course, this can be adjusted to your liking.

Item Pricing and Money
I am not sure what is going on with this, but prices are all over the place and have gotten out of hand. Looking at Teplar Village first, the items in Bripp's that cost around 450 really need to have a price reduction. You are not going to be killing crabs until you have at least a few of these items. This means you will have a bunch of players clogged up within the first few areas, which makes it even more difficult for players to get the next set of items. Pretty much, this trend needs to follow through with all of the items in the game. I am not sure why the newest items in the game cost 300k-400k+ per piece.
With all of that being said, there is also an issue with enemies giving way too much money. Part of this issue being generally that players can currently play by themselves, but mainly that enemies have way too many drops, with some being worth a lot of money. Some of these drops need to be completely removed, while others need to be made slightly more rare. In addition to this, two other things should happen. The first one being that the coin drop should be a little more random. Instead of a logon giving 33 coins, it should be more like 23-43 coins. Secondly, enemies should have junk items. (Flashlight has a post about this) Junk items are something you can find from enemies pretty commonly, but they are not worth that much and have no use. (Generally something stupid like green squisher head or red squisher fang.) I do not think there is an issue with having rare junk items that are worth a lot of money, but it is something that not all enemies in the game should have.