Liz,
ppinc is short for productPage.inc, it is reference to the files in the 'html/html-templates' directory that control the layout of the product pages.
So, when some refers to 1a, 2a, 4a, search2, etc... They are refering to the productPage.inc file with various extensions. IE: productPage-1a.inc, productPage-search2.inc, etc...
So, if you want to present you products 2 across, just use the default productPage.inc file, it is the same as the 2a file, BTW...
If you want to view your page with the other ppinc files, to see what they are like, review the thread on how to do that, at:
http://www.agoraguide.com/faq/viewtopic.php?t=2582
There's another thread that explains each of the ppinc files a bit:
http://www.agoraguide.com/faq/viewtopic.php?t=27
adding/editing/removing products is standard with all versions of AgoraCart.
Stock Levels are managed in version 5, with a Premier Membership and Booster Pack.
It's available for v4, too, but only requires a basic membership to get it.
However, the v5 inventory control is much better and really works to prevent overselling of products.
V5 Pro, is kinda per site. See the Pro Version requires that you input your pro member login info in the store's password settings and if you don't want your clients having access to that info on their site, then you need to have separate pro member account for each of them.
HTH!
_________________
God Bless!
Bonnie - AgoraCart Moderator
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