I've uploaded the credit card section here:
It says you'll be billed month per month on the right hand side under the VIP membership program, but I think it's pretty clear that the page is engineered to be misleading. It looks like a standard upsell, not a mandatory part of the purchase.
They're relying on people clicking the accept terms and conditions check box without realizing that it's signing them up for the membership, i.e. it's the terms and conditions of the program, not the site in general.
Terms and conditions boxes are common in the checkout process and nobody gives them a second thought. I'm not sure I would have caught this one if I went in naively.
Clearly unethical, IMO.