1- Just like the skill page where you can view 3 different pages of buff, same thing happens here.
2- Same like the Auction House when we click on categories for example weapons, we get a list of weapons to buy, same thing applies here when we click on certain potion buff we only see that type available.
3- We can have 4 different pages :
a) Offense Potion Page (Offense Buffs)
c) Special Potion Page (Special Buffs)
d) Unique Potion Page (Tradable Potion Buff)
4- No level setting required so we can see all potions.
To give you a clear example of what im saying heres how the structure will be :
1- When we enter Auction House, when we click on weapons don't we see several pages of weapon only ?
2- When we enter the Skill pages (Buffs) Isn't there 3 links that gives us 3 different buff page (Offense/Defense/Special) ?
3- Well why not add those 2 idea together to make Potion House !! If we want defense potion we click on defense button to take us to defense potion page (same as skill page) and we click on the potion we want to see how many potion there is (Auction House style) !!
Well what do you guys think about this idea ?

