Quite a few coupon code here for NetRegistry customers on selected Dell systems — up to 10% off. Via this NetRegistry newsletter.
Offer 1: 5% Off Small Business PCs under $1499
Code:3913182DC576
Offer 2: 10% Off Small Business PCs over $1499
Code:39131CC55486
Offer 3: 8% Off Medium/Large Business PCs
Code:391313DDD7D8
Offer 4: 10% Off Dell Printers
Code:391436C21D7C
Offer 5: 5% Off Inspiron Home PCs
Code:391312F42C12
I guess you might need to be a NetRegistry customer to use it but worth give it a try. You can be a NetRegistry customer by getting domains from them (a bit over-priced though).
Great deal - told my brother-in-law and he ordered a Vostro laptop using the discount code with no problems, so you don't need to be a NetRegistry customer - just put in the relevant code at the check-out.