To level up in LaTale after 80, you need potions because no one will tolerate you sitting down to recover MP; The potions are so expensive for a stack, and you burn through them so quickly, that there's only 3 ways to go about it to acquire them.
- Mine naturally, which you're looking at a good 3 hours just to buy a stack of potions that will burn up in 10~20 minutes
- Mine with the Mine Pet, it'll be about half the speed; So an hour and a half to play for 10~20 minutes
- Buy cash items and sell them.
The latter is obviously the best option, but, even so the game does become cash oriented above 80 anyway. You pretty much will need a pet, you'll want additional stats on top of it; And with the new Super Stat puzzles, you'll want them too.
Basically, when you're about level 140, a cash player is twice as strong as a regular player.