Bundjalung is an awesome park.
We camp at black rocks camp ground, further north than woody point,
Beautiful place to stay for the weekend cost $3 per person per night plus $7 per car per day.
Downsides are there are only bog toilets, no showers limited water so take your own one large communal campsite and heaps of individual sites set into the bush.
Most of the sites are designed for tents but the sites at the northern end of the campground can fit campers and caravans, plus its close to a freshwater lake that is great for swimming in summer, and winter if your keen enough.
Here are the details from NPWS web site and the address - Black Rocks camping ground (26 sites)
Location: South of Evans Head.
Getting there: Turn into Gap Road off the Pacific Highway south of Woodburn and follow for 15 km. The route includes unpaved roads, suitable for standard 2WD cars.
Campsites are suitable for: caravans; camper trailers; camping beside your vehicle.
Facilities: Pit/composting toilets, picnic tables, electric/gas barbecues, wood barbecues
Things to do: This campground gives easy access to Ten Mile Beach. You'll need to bring your own water and firewood.
Fees: $3.00 per adult per night, $2.00 per child per night.
Bookings: Bookings are not essential
Contact: Lismore/Alstonville http://www.nationalparks.nsw.gov.au/parks.nsf/ParkContent/N0041?OpenDocument&Parkkey=N0041&Type=XO