Ends today. Dell Financial Services is taking $500 of their refurbished Dell Precision 3620 Desktops with coupon code MAYDEAL4 [Exp 5/31]. Excludes clearance. Shipping is also free. Other codes:

• $250 off Dell Latitude E5470 Laptops w/ code MAYDEAL1
  
• $150 off Dell Latitude E6540 Laptops w/ code MAYDEAL2
  
• $200 off Dell OptiPlex 7040 Desktops w/ code MAYDEAL3