If you live in (or are visiting) South Africa and you enjoy going to our national parks then a Wild Card is well worth it. A once-off purchase gives you a year of free entry to lots of national parks around South Africa. It isn’t particularly expensive – mine paid itself off ages ago.
You can check out the details for all pricing options for yourself, but I went for the couple membership which costs R335 (about $45) for the year. We were in Kruger for 5 days which added up to R300 – so the card had already almost paid for itself after one trip.
Also note that if you are not South African the card could really save you money. Kruger will cost you R120 (about $17) per day so the Wild Card pays for itself almost immediately! And you can apply online too.