Something is not right, the page you show mentions Modellbau Fisher; but the email address is not correct.

The site you show uses: maerklinhaendler-fischer@web.de

On Modellbau Fisher's homepage, the email address is: modellbahnfachhandel-fischer@t-online.de

https://www.mbs-fischer.de/

Of course he could have several different email addresses.

More strange is the price; if you find the same 55073 on Modellbau Fisher's homepage, the price is 2.400,- Euro,
which is about the double of the 1.199,50$ you've found....................

On the homepage you found they have 100 in stock, while Modellbau Fisher's homepage shows sold out,
just like on Märklin's own home page: https://www.maerklin.de/...ts/details/article/55073

I wouldn't dare to send my money to "BestShop" - and look carefully,
it actually says: BestShop and then: "your slogan here" below in small letters

Edit: I just found a funny one, this is a one-of-a-kind loco, weathered by "Lars Diehl": https://www.elysannetrem...ehl_d5fnoplmpostrll.html

The exact same loco was sold by "Bimmelbahn" in Germany: https://www.bimmelbahn24...atiniert-von-lars-diehl/

Somehow "BestShop - your slogan here" now has 100 in stock of this unique loco, and selling them for half the price..............

Per.

Thank you all,
you just confirm what I thought, the prices, the stock amount and their address has all the ingredients of a scam.
Cheers
Zurky