Trading xp curve?

I've been leveling up trading quite a bit, and i find it odd that 1500 items almost across the map gave a mere .3% at master 5.
Surely this is a bug/wrong curve/something?

 

I agree that the Trading Life-Skill seems to be curbed somehow in comparison to ALL the other life-skills. Although the website and other sources show that Trading Should be receiving the same amount of bonus rate, as the other life-skills.

I can confirm that this is indeed a problem here on GamezBD, but I am unable to verify whether it works as it does on EU-Retail-BDO, if it were the same though, Trading Skill on the Retail-server would be nearly impossible to level up to Guru 50 then.