Noob got some questions ( again )

[Belpheron]

Hi everyone !

1st- Is there anyway i can have more inventory space ?? I see places for 2 more bags on my inventory screen but cant find where to buy them.

2nd- I love to buy & sell stuff all days long with my store but i noticed some players have more slot in their store than me... How can i have more slots in my store?? Do i have to change it for an other?? Is it something lvl restricted?

3rd- Is the sotrage permanent?? Or items will vanish if left there too long ??

Thanks a lot for your help!

Belpheron