Those guys have something like 30 seconds max to hit their mark.
Now those are professional buyers. I think for your amateur crowd you would have to provide a bit more time. perhaps a week. just make it clear what is happening.
And that big clock, have you seen the big clock? if I ever made a dutch auction ticket site A big clock would feature predominantly in the ui. Unfortunately I don't think the flower auctions use the big clock anymore. which is a shame.
https://www.youtube.com/watch?v=uAdmzyKagvE (tom scott)
Scalpers would end up holding the bag if they did that. If no one is willing to pay $10k for a ticket, but then scalpers buy every ticket for $10k each they aren't going to me able to find anyone to resell the tickets to and will end up losing money.
Anyone can protect themselves from being scalped by just participating in the auction.
Then use some form of a Dutch auction to sell them.