Dell Home takes 30% off a selection of laptops and All-in-One PCs via coupon code "TRQ3ZW?$J6HQ2T". (Scroll through the red coupon buttons at the top of the page until you see "30% off coupon deals".) Plus, all orders bag free shipping. Deal ends October 1. A couple of best bets, with prices after coupon:

See all Dell Home Coupons.