I would like to know a few things concerning this website: 1) do you have a system(s) there? 2) do you have any subscribers to that system? 3) what is your future outlook on the site as far as more members/buyers of systems? They claim to be using a good amount of their resources into advertising and growth of the website. I am interested in getting involved, but only if the site grows a little more.
There's no rush. Wait a while, see if the site grows. Meanwhile trade your method using your own money and build up your track record. If and when you decide to become a vendor on Collective, the site will be bigger and you'll have a more impressive track record. It's a win-win proposition.