I doubt it Brandon. In my experience, you haev a problem becuase the total charge at gateway with the coupon was only $150. In my limited 12 Amex price matches, my understanding is AmEx will not pricematch from an original starting price that is MORE that was charged on the card. If you had charged, say $300 of stuff and got $50 off, I have successfully pricematched one item (a camera) taking the position the coupon was on the rest of the order.
Thirsker -- let me know this morning (it is snowing so I am not in a hurry) before I take mine back and you can have it for my cost plus shipping at cost -- $149.99 plus $8.93 sales tax = $158.92. It does not weigh much, so I would guess USPS Priority Mail w/o insurance would be around $4.00. I'll include a copy of the receipt and rebate page they printed out for me at CompUSA 🙂