here's a really cheap solution but its a hassle to put up.
Two hooks drilled into the "luggage rack" on the top of the camper $5.00
10' x 15' tarp $30.00
2 pieces of 3/4" electrical conduit 5 feet in length and a stright conduit connector $5.00
1 dozen quik straps $$0.50
2 extendable 8' tent poles
2 lengths of cord and 4 spikes
Strap the 10' side of the tarp to the two pieces of conduit
connect the lengths of conduit with the connector.
hook the conduit over the hooks on the luggage rack
extend the tarp out the 15'
insert the poles into the corners of the tarp and tie the cord to the top of the tent poles.
spike out the cord at 45 degrees off the tent poles x 2 for each pole
Voila, cheap awning