Based on the pictures, no indications of a counterfeit can be recognised, so the piece is most likely an original. The list price for the 147 is currently around 600 euros including travel case; a used example without warranty and original accessories for 275 euros is to be classified as ambitious but compared to other online offers still the cheapest. Anyone who does not urgently need a 147 generally fares better with some patience, since Traveller models are indeed rarer than 146s but are nevertheless offered repeatedly.