BuyDig via eBay offers the refurbished Garmin DriveSmart 61 7" Bluetooth GPS Navigator with Lifetime North American Map and Traffic Updates for $99.99 with free shipping. That's $19 under our September mention and the lowest price we've seen. (It's $90 less than buying new.) It features a 7" touchscreen LCD, Bluetooth, and USB port. Note: A 1-year Garmin warranty applies.
You don't need to hire a contractor or do extensive renovations to add value to your home.