YMMV, but the chances are they tell you no. Their reason will be they can't PM gift cards/coupons. But they have no reason not to give you the $49.99 price.
Hmm well the thing is they do PM GC, they just deduct the price of what the GC value would be, but since its a sale AND a coupon thats why I would think it is YMMV, but will still check. thanks!