Home electronics, appliances, computers, gift cards, doorbusters, early-open specials, clearance and some other items are not eligible for layaway.KmartService fee: None during the rest of the holiday period ($5 to $10 the rest of the year).Downpayment: $15 or 10 percent for the eight-week plan; $30 or 10 percent for 12-week plan.Cancellation fee: $10Available online and in stores.