Bad advice is worse than no advice. Dell has released 50% off coupons and there are many of us in this forum who got a $1,500 laptop for $750, I being one of them. And we found these deals right here, in this forum.
But the problem here is you just never know when exactly. Usually in the past these coupons have been released at the end of the quarter to boost sales and meet their quota. In order to get in on one of these rare moments, you need alot of patience and have the money at hand. When this happens Dells site gets hammered hard and often the deals are pulled 3 hours after initial release, so you need to be quick.
So the key elements are, visit this forum often and daily, have the cash ready and be prepared for a long wait (short for plenty of patience and persistance).