What are the average fees a voluntourist should expect to pay?
A voluntourist should anticipate a minimum of $2,000 USD, including airfare, taxes, insurance, etc. for anything that is non-domestic. For domestic trips, you may be able to keep this number under $1,000 USD, including airfare. But I would not recommend always going for the cheapest option. Cheap does not equal better. If you are not in a position to utilize discretionary funds to engage in this form of travel, then wait, conduct some more due diligence, and take the trip when you are not making a decision based upon the capacity of your financial commitment.
