Value based pricing is neither about being cheap, nor about the kind of product/service. The value potential of $3.99 will depend upon the quality of output that the product/service provides, irrespective of the categories mentioned by you. Ideal way should be to benchmark your product/service content to decide the price point.

This is not a price point at which I would have any expectation of value.

You may share ONE good point/tip here, and the purpose exclusively would be to find out who is a member of your target market and has a credit card and the authority to use it.

To be clear: this is a listbuilding-level tactic and not a moneymaking one.

I suspect this answer is going to be different for everybody.

Personally, detailed guide/e-book.