Item Linking help

[Teckniel]

I'm working on a store program where other people don't need to have the mod to order or view your things that you sell

I would use a command like setitem1 to store a item into a variable
up to 10 items

the seller would need to type setitem1 item:gold (until I have a nice working ui with dropdown buttons 'working on it')

setitem1 = "living essence";"6g"
setitem2 = "Guardian stone";"5g"
setitem3 = "Bolf of mageweave";"2g"
and so on


so i would need to make 10 variabels
for every item.

and if a player call's it i would send the item as a link so when he click on it he can see the item.(link when you hold shift and click on a item that you send to a other player)

But how would i do that?
I'm a beginner :s so i hope samone can help me out


-----Done----
if a player send me a wisper !list I send the stuff over (this i already done but without items)