Hi,
As solution, I think that you will have to use the variants.
Using the variants allow you to have different prices for each events, and different prices for each ticket type, pickup point, etc.
Once you have configured one event, so set all the prices for each variants.
Then you will be able to export it into a csv, edit the csv in order to create another event by replacing all the informations and setting up the prices.
Or copy the product in the product listing of HikaShop, and thanks to the mass actions, edit this event prices by a calculation.
Both solutions can be good, it depends only on the way you want to edit the prices, if it's a ratio, or not.