Well, I can try to explain this.
I am not sure what are the rules for pricing in other middle European countries, but in Croatia, it goes like this:
The trophies are scored as per CIC system.
According to this system, for red deer:
170 - 189.99 CIC points - bronze meal
190 - 209.99 CIC points - silver medal
210 CIC points and up - gold medal.
For comparison Croatian national record champion in the book - 261.81 CIC
then, it goes: 250 CIC points is extremely rear. 240 is very rear. 225 CIC is very very good and not easily hunted.
So, the trophy is valued by CIC points, and when deer has passed the minimum for gold medal score the price of each CIC point becomes more expensive.
Average pricing may vary slightly from case to case, but it goes like this:
170 CIC - 10.000 kn - 1.333 eur
180 CIC - 14.000 kn - 1.865 eur
190 CIC - 19.000 kn - 2.533 eur
200 CIC - 25.000 kn - 3.333 eur
210 CIC - 32.000 kn - 4.266 eur
220 CIC - 42.000 kn - 5.600 eur
230 CIC and more - 62.000 kn - 7.266 eur // each point above 230 is 5000 kn - 666 eur per point (10 points = 6.666 eur)
Red deer: trophy fee ONLY for 240 CIC in above photo: 7.266 (for gold medal) +6.666 (for additional 10 points) = 13.932 eur
There could be other expenses lodging, guide, special meals, observers, for which we do not know.
Anyway the difference in price is incredible. very good bronze medal deer (170 cic) goes for 1.333 eur, while 240 CIC gold medal stag goes for 13932 eur, ten time more. exponential encrease!
European wild boar, in photo below trophy red deer is in gold medal as well.
Average pricing, trophy fee only:
Gold medal 120 CIC or more, 10.300 kn - 1.373 eur (each point above value 800 kn - or 106.66 per each CIC)
Silver medal 115 - 119.99 CIC, 7.800 kn - 1040 eur
Bronze medal - 110 - 114.99 CIC, 5.800 kn - 773.3 eur
national champion is 149.25 CIC
This one to take for example, then would cost 1373 + 29.25 cic = 1373 + 3119 eur = 4492 eur.
again, we are speaking of only trophy fees, not about additional costs, guides, lodging or any other service which add to total cost.
However, we are here talking about extremely high book score trophies and their prices.
to which i do not agree, and in my opinion are really too high. But it is, how it is.
In my view, very nice red deer for trophy room in the level of 150-160 CIC, can be found for trophy fee between 7000 - 8000 kn (933 - 1066.7 eur), not accounted all other costs.
red doe, for example is 700 kn, 93 eur, not accounted all other costs.
In conclusion, the trophy fees grow exponentially with top CIC points, but for good hunt and thrill of the chase something can be found for every pocket.
For wild boar, driven hunt is very interesting, and very frequently cost can be agreed in lump sum to cover even the best and strongest trophies.
So, in Croatia, something can be found for every pocket. Its worth looking into, but a bit of research is important to know what to look for and in what price level: strongest gold medal trophy, bronze medal, medium strength of trophy, selection or management hunt, etc..