I wound up buying a $100 ecard for restaurant.com on ebay for about $6. Worked fine.

BTW, does anyone know how to do a map search on restaurant.com these days? They want you to enter a zip code to search for restaurants. That's fine when you're home or in a major city, but if you're travelling to more remote areas and want to know if there are any participating restaurants, the map feature is MUCH easier. They seem to be hiding this feature now.