Hello, I am the ebay seller kitshobby2011. Do you mean I am selling recasts (or copied) Contrails resin engine set in eBay? Please allow me to explain. I NEVER sell any recasts (or copied) products. All Contrails products were direct imported from Contrails Model. If there is significant quality different between the resin you bought from me and Contrails Model. Can you take some photo of both set? I will talk with Contrails Model what is going on........
For you information, I also selling Braz products. Before I imported Contrails resin engines, I was selling Braz and I did sell Braz 1/200 747 engine in 2014 but all were sold out within a year (2015). However, I unable to restock Braz 1/200 engines anymore because Braz already stop the production. In Hong Kong, 1/200 scale is more popular than 1/144 and Cathay Pacific 747s are using RR engines. That's why I imported Contrails Model to fulfill Hong Kong modeler. To be honest, compared with Braz. Contrails product's quality is not good but it seems the only 1/200 747 RR engines in the market.
Please excuse my poor English.