Guys let me reach to a conclusion.
Upgrade rate is low
Drop rate is low
The stones are expensive
The only way to reach +15 is to buy cash
My boy daneos is doing for the money
Drop rate depends on what stones you're farming for, and I'm getting a lot of stones at my current level.
Upgrade Rate feels fine to me.
u70 stones have gone down in price by a wide margin. They used to be 400kk at the minimum.
...so? Just because you have +15 gear doesn't mean you're a god. +15 gear, in my opinion, is more cosmetic than practical. If you have the skill and good enough gear, you can take down a +15 player. Besides, I got my level 30 gloves to +14. Low level sure, but still a damn accomplishment on my part.