Have two different prices for a same trip

Hello

I can not add two different prices for the same trip as you mentioned with Add Variations

https://greattrekkers.com/tours/12-day-adventure-uganda-affordable-safari/

Regular price 3750 USD
Low cost 2750 USD

I only get the price added, but not that the client chooses between one or the other.

Can you tell me how to do it? And is it possible to add the label “FROM” to the price?

Thanks for your help