Dell Outlet Business has the Laptops and Desktops on sale.

25% off Dell M4600 laptops w/ code: 3P2P?HMDCFKX9S (exp 12/7)
20% off Latitude E6520 laptops w/ code: HV4Q5NWCF6B8M3 (exp 12/7)
15% off OptiPlex 790 desktops w/ code: 9GP7P3PHSF0XTQ (exp 12/7)
15% off Inspiron 14R, 15R, & 17R laptops w/ code: GGCL4T3VFBQ5MK (exp 12/7)

Dell Small Business has the Latitude E6520 Laptop with a Dell Venue 16GB Phone, Intel Core i5-2410M 2.3GHz, 15.6in (1366x768) LED, 4GB DDR3, 320GB HDD, DVD+-RW, 802.11n, 6 cell battery, Windows 7 Professional 64 bit, 3yr warranty for only $1851.99 - $542.99 off = $1309 + $8 shipping.

Dell Outlet Business has 15% off Any Vostro or Latitude Laptops w/ coupon code: 3SQDWKF8N3Z646 (exp 6/8).

some samples:

Vostro 3550 Laptop w/ Intel Core i3-2310M 2.1GHz, 15.6in, 4GB, 320GB $485
Latitude E6520 laptop w/ Intel Core i5-2520m 2.5GHz, 15.6", 128GB SSD, 9-Cell batrery, Win7 Pro $781

Click on "check availability" under the model you want, click on "price" to resort by price to find the lowest priced config. Stock change quickly and systems will be removed from inventory if sold out.

All refurbished systems come w/ limited time warranty, 21 day return, and brand new packaging and manuals.