Store Items Question

[ThugNazty]

How are the items on the store decided? Someone told me it has to be an item that has dropped already, but are there limitations to that? For example, will the weapons off KT that are 226 ilvl be added to the store or will those only be obtainable through raiding?

Thanks in advance!

[moerderhobo2]

last seasons it was a couple weeks before ulduar patch.