Interesting poll, but the 'top' price may be different than the average price.
My highest prices that I've both bought and sold at (the plus $5K) is not the average. I'd love it to be the average sale price - lol - but reality is $1,500-$3,000 is the average for buy/sell here.
I'm glad to see the gelding prices are getting better, as when I first got minis people told me basically geldings/excess colts were worthless. I've changed my thoughts on that and to get a breeding quality colt or a gelding it's not a giveaway price.
It still can be hard to justify the prices on minis - I serioulsy hesitate to pay over $10,000 on a mini only as it would need to produce foals that were worth that or more - there are many that do, but I see many $$$ horses that their foals sell for a fraction of that price.
Marketing works on some - sire sold for $25,000 so your horse is worth that too - NOT!