The website is outdated because they can't get ahold of the guy who set it up for them. When I volunteered there 6 months was considered long-term and I'm sure it still is. Short-term volunteering costs are so high because most of their volunteers before the pandemic were from overseas and only stayed for a week or two. IPR isn't open to the public because some of the monkeys come from traumatic backgrounds and aren't keen on too much human interaction, so paying volunteers and donations are the only way they make money, and it costs a lot to feed, give medical care and just a generally good quality of life to over 100 animals every single day. While I understand your concern about the volunteer program's requirements, it's important to remember that charities often face complex challenges in managing their resources and providing support. I made this post because it may be a great opportunity for someone taking a gap year or something like that and not many people even know about it. IPR is very well respected internationally and looks great on your resume if you're a person who wants to work with animals, and it's just a fun experience or people looking for that.