Create member only website

I am after a members (paid) only website. I own a website (domain name hosting etc) and would like to? implement a "members only" functionality. The product should be easily uploadable into my website(s) and? easily configurable? ready for use? (assume I have very little IT skills). I would like it to have all? the? functionality of off-the-shelf membership products such as MemberWing ([[login to view URL]][1]). See the list of fucntions. Most similar off-the-shelf products retail for about $100 so I am expecting mine to cost the same, a bit more or less. Most importantly the product should be able to take/accommodate unlimited membership registrations. The content of the members only area will be mostly (but not exclusively) user generated. I should be able to use the product into my other websites.