Hi Pandora,
There can be multiple ways to accomplish this.
Sellacious has a setting to show email/phone number after clicking a button. We can use the same logic to make the price visible.
Since it is not a common requirement, We are not expecting to add it to the core Sellacious in near time.
Although, If you purchase a platinum year plan from us, We'll add this functionality to your store for free.
Thanks,
Ankit A.