How do you tell value?

[._| 3 Vv |3]

the phrase '290' is referring to a toxic small charm of anthrax, 290 poison damage over xx seconds (not sure) as far as things like 40/15 jewels go, that's referring to 40%ed/15ias (or 15max) jewels. a 3/20/20 refers to a small charm w/ 3 max damage, 20 attack rating, and 20 life... hope this clears up the actual terminology... as for what the items are used for? 290's are currency for most of non-ladder bnet as far as i know... hope this little tid-bit helps..