Ayahuasca retreat prices can vary. It all depends on what type of experience you want to have with ayahuasca. If you want to have the best transformation possible, it's recommended to find an ayahuasca retreat that includes at least 4 ceremonies - the normal price for this is roughly $1000 USD. Places that charge over $2000+ are usually overpriced for what they offer and you need to be wary about places that are very cheap.