Fleischmann Lufthansa Airport Express Question

Hi

I am starting to sell many of my trains that I have been collecting for years. One of the sets is one from Fleischmann. It was the Lufthansa Airport Express train

It came with an engine, and 3 cars. It has been run perhaps 2-3 times - and kept in the box ever since. It still looks like it is in near perfect condition.

I also still have the original box.

I have several other unique pieces that I am going to sell - but I am wondering what I should even list this model set for?

Thanks so much for your time

Frank