At Best Buy, now through 4/19 you can trade in a working Windows XP laptop for a $25 gift card plus a discount coupon good for up to $75 toward the purchase of a new Windows computer, Apple computer or Chromebook. This is an in-store only promotion. That could get you a pretty good discount a new laptop, especially a Chromebook like this HP 11.6" LTE Chromebook. It has both built-in WiFi or through Verizon's 4G LET network (note: a data plan is required for the latter). It's regularly $199, but you could get it for just $99 if you get the full trade-in value. Sales tax is charged in most states.