Recognize MacBook Pro fakes?

I'm considering buying a MacBook Pro over Willhaben (Austrian Ebay), so I decided to use this model:

Display: 15.4 ", 2880x1800, 221dpi, 60Hz, glare, IPS / IGZO, 500cd / m²
Processor: 6-core Intel Core i7-8750H, 6x 2.2GH
Ram: 16GB DDR4-2400
Hard drive: 512GB M.2 PCIe (proprietary)
Graphics card: AMD Radeon Pro 560X, 4GB GDDR5
Connections: 4x Thunderbolt 3, 1x jack
Wireless: WLAN 802.11a / b / g / n / ac, Bluetooth 5.0
Webcam: 0.9 megapixels
Battery: 1x battery firmly installed (Li-polymer, 83.6Wh), 10h runtime
Keyboard: German layout - QWERTZ, (illuminated, rubber dome), touchpad (Force Touch trackpad)
Special features: USB-C charging port (all ports), touch bar (with fingerprint reader)
Weight: 1.83kg
Dimensions: 345x240x16mm
Color: gray (Space gray)

Do you know what are typical fake errors (on the packaging) in MacBook Pro's or how I could easily check if he sold me as an original product? (The product is still welded in the original film) I think that this offer is no fake but with a 2550 euro laptop I prefer to be on the safe side and ask other people.

Enter the serial number at Apple (website) (Warranty Claim)

There are few to no MacBook fakes.