I bet the reason you're asking is because you have seen many papes in the SERPs that were one page and quite long. I have over the years. Many of them were selling secrets of some sort from love to getting top SERs and I had to buy something. However, again I saw the one pages all over the place in the SERPs. Maybe if you find one of them and emulate its style you might be successful.
Me? I'd group it into pages and try to drill down (for each page) each keyword into a subgroup of sorts like if you're selling socks. The socks is your top level keyword and blue, white, yellow and green socks are your subpages.

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