Did Sony Profit from the Walmart $100 Discount?

[bumidan]

Scenario A:
Walmart Revenue = $399 (PS3)
Less:
Product Cost = $350
Gift Card/Promo Cost = $75

Profit/(Loss) = ($26)

Scenario B:
Revenue = $399
Less:
Product Cost = $380
Gift Card = $94

Profit/(Loss) = ($75)

NOW $26 loss does not sound too big. HOWEVER, as a general retailer, that is a BIG LOSS. To put it into perspective, based on a 6% operating margin -- Walmart has to SELL an ADDITIONAL:

$433 (to make $26 @ 6% margins) TO BREAK EVEN ON SCENARIO A.
$1250 (to make $75 @ 6% margins) TO BREAK EVEN ON SCENARIO B.

You can see that offering $100 GIFT CARD is a huge deal and therefore it makes sense that Blu Ray manufacturers MOST LIKELY had some incentives for Walmart to get rid of inventory.

Please feel free to change SOME NUMBERS and ASSUMPTIONS, but the general underlying process and calculations should be relatively correct.