I've never taken Ayahuasca but I know from extended research and reading/watching videos on other people's experiences that it isn't something you should try and "get your hands on" and do casually like you would mushrooms. This is something you need to have a reputable shaman present for in order for proper guidance and safety. There are many people that claim to be shamans that are fake so look out for that as well. Research retreats in Peru (yeah they cost a pretty penny) but they're worth it from the feedback I've read. You get to stay in resorts or in beautiful rainforests and have the most life changing experiences with the reassurance that you will always be safe and cared for by professionals.
http://www.ayahuascasatsangha.org is the best I have seen so far as far as price and their mission of giving back and keeping it sustainable as opposed to making a profit off of this ayahuasca industry that has been booming. They are skeptic of this and assure you the money put down is to keep the location running. You can choose to donate after but you don't have to. You can even stay and help if they accept you. Good luck and remember psychedelics are a tool and should always be taken seriously. Taking them recreationally with friends is something I never recommend because it takes away from the inner journey they are supposed to be used for. Peace.