Quote:
Originally Posted by mrpaint
With itemtype we can improve performance because when many items are active, if each item contain all working information so that is a lot of data and need more memory. With itemtype, all we need to do is refer to itemtypeid 
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Sorry for the barrage of questions here...
Then can you explain how itemtype has a price and items also have a price. How is the price of the end item actually calculated?