[Leftium]

If you are solving a truly painful problem, people will pay matter no matter how buggy and unfinished the product is.

Charge 10% of the value received. Estimate the value based on extra revenue generated, expenses saved, time saved, etc. (Business owners should value their time worth more than $50/hr. So multiply hours by $50-100)

[mx_abhishek]

The time saved would be in answering support requests, or saving time at end of customers. Competing/similar products charge between $20-$100/mo, so I figured charging $100/yr is definitely not steep. And a customer who is paying $100 for an upcoming product can definitely be considered a customer likely to fall within the 'validation' parameters.