There are many erroneous data here,
Not wanting to be obsessive here (as many); just say Charlotte Casiraghi is not the Athina Onassis, or Marta Ortega; much less Prince of the Arab´s country; those are the true owners of the horses they use.
The 10 horses used by the (Princess untitled) are only 1 or 2 of his property, only Tintero and Troy are horses +75.000,00 € of value, the other´s has no category to reach € 35,000.00 market.
They are horses without history (curriculum vitae), without genetic background, no good results; or trained by high professionals stalls; variables very important to be up the market value.
The last media sale horse known of the 5* events/shows, was CARLO 273, acquired by Marta Ortega, for 12 million of euros.
(That is real chic)
Now the expenses incurred by participation in the events is diferent ... is evident that they are high, many professional riders, has nutritionist, veterinarian, 2 or 3 GROW's finally always need a good truckdriver, helper discharge, these things are always expensive, nothing like that exists in the amateurs, unless ... and maybe that's the case, some stars of the ShowOff, like to create a false appearance of professionalism in their interests appear, and the whole circus behind them ... ... ...
Not to mention the equestrian real estate, they have, huge instalations, with very high cost equipment, with whirlpool/Jacuzzi, solariums, roundpools, electric carpets;
None of this exists in the amateurs life horses ...