Multiple abilities on a magic item

[Jack_Simth]

I think they mean this:
This one does give a discount for more abilities for the less valuable (since I assume they mean less costly/expensive), but it only applies to slotless items. I can't find any real explanation of what qualifies as similar--does it need to be a bonus to the same stat (e.g. a luck and deflection bonus to AC)?

The rules for custom items are intentionally vague, mostly because they're oringally guidelines. Going by the things that are statted up, though, "similar" mostly means either "You won't be using them at the same time" or "they draw on the same limited pool" - so multiple spells on a staff are "similar", the various options of a Cube of Force are "similar", a theoretical widget that let you use take on three different specific forms at will (one as Alter Self to turn into a troglodyte, one via Beast Shape II to turn into a komodo dragon, and one via Dragon Shape I to turn into a Green Dragon) would have each form be "similar", and so on.