Dynamic Pricing Plugin(booking spot reserve)

Is there a plugin which is able to create a dynamic ticket or spot price booking with this rule

1st person books spot = $200
2nd person books spot = $150
3rd person books spot = $100

Overall booking fee per person is $100 if all 3 slots are booked so everyone only pays
$100

https://www.shareafishingcharter.com/search/get/Cabo-San-Lucas?d=1

https://www.shareafishingcharter.com/howitworks

There is no plugin there but if you want than we will make it for you.