This!!All of this once again depends on your gear and the amount of money you have.
If at the level of 140 you still using a golden blade it will definitely be harder to kill the mobs.
I think the game is build that once you hit a certain level you will be forced to spend lots of real cash or spend life of real time to get barely any gold. And mobs are op so you can spend all ur plat on restoration potions.
Like realistically.
You had a good chance of being a good player without spending money back in 2011-2012. Now days the only way you can get good is by grinding lots and being on a lot which kind hits you that you spend 5 hours farming and you get like 20k..
If I was a new player and saw all this items people have I would just quit because I could never realistically get them and in the end I will just waste lots of time
Mobs started getting way too much to kill from when carrow was made and then they got even tougher at the tower. I've seen the problem, it's the stars of the mobs, as they go up in starts the hp evades damage and w/e else goes up way too much. I only tested on the hawkhurst but a 1 star has about 2k hp while a 4 star has about 7k hp... that's a massive difference in health, it shouldn't be anywhere near that it should go up by 1k per star.