Duplicate Content - Would this be a problem?

I'm selling digital products on a popular marketplace site in my niche. On that marketplace, I have long product pages (around 4000 words each) that took a long time to craft, detailing all the features of my products.

Now I want to start also selling these same products on my own website (new site). I am planning to buy a lot of articles from high-ranking websites in my niche, with links to my new website - which would normally work to give it some authority and good Google rankings.

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My new site will also have a lot of pages with original content - but for the product pages I would really like not to have to re-write the content. Would it be fine to just copy the content from the marketplace site? (they're the same products and features)

Thank you for any advice and insights,