HOW MUCH ! Rear stub axle nut ?

Just bought part-ownership in SKODA, or so I thought when I purchased a nut for my 2005 Fabia VRS MK1.

See receipt, as I only paid £27 for the whole rear bearing hub assembly fitted with the ABS magnetic ring c/o Flea-Bay,

The same thing from Skoda £82 approx.

The only reason I bought the nut was, the ones that came from seller looked wrong, but NO they were the same exact thing.. 

How on earth can they justify the cost, for the bearings etc, don't tell me well the Skoda ones are genuine, Skoda doesn't manufacture wheel bearings and probably buy them-in already assembled, in the rear hubs..

Might be worth mentioning nut size is 30mm.