I have an Erde trailer I'm not using but hadn't got around to selling. Bought it from Hoops last year but have moved to Sussex so no biking or trailering for the foreseeable future.
It has galvanised chassis, good tyres etc and is intended for 3 bikes but presently configured for 1. Simply needs an extra 'track' for each additional bike, and these are available from dealers or online. New trailers cost about £500 but happy to take an offer.
Drop me a PM if interested.
PS the trailer is still at my old gaff near Buckfastleigh.