29f: inventory values and Net Realizable Value

Pretend I’m the CFO of a computer company like Dell. A custom-built computer has a sale price of $1,000. The cost of the computer parts is 400. The cost to assemble and sell is 350. Therefore, the profit potential is 250.

  1. Would it be accurate to say that COGS = 400? These are parts lying around a warehouse, we haven’t factored in the labor costs to assemble the parts yet

  2. assuming that COGS = 400, then NVR is 1000 - 350 = 650, right? Since NVR of 650 is greater than COGS (400), I should be using 650 as the unit value when declaring inventory value on my company’s balance sheet, right or wrong?

  3. On wikipedia, it states that I am allowed to use the SALE price to calculate inventory value (1000). Is this wrong, or is there some context where it’s okay?

http://en.wikipedia.org/wiki/Net_realizable_value

“Inventory can be valued at either its historical cost or its market value. Because the market value of an inventory is not always available, NRV is sometimes used as a substitute for this value.”’

EDIT: i think i figured it out; the answer depends if you’re reporting undeer GAAP vs IFRS standards?