So I control the search database that did the archive and I can clone it to any site I want
Go create your own search archive to store public domain articles put on free distribution feeds
As long as you cite the source, you own your archive and can sell it to whoever you want
Site also has some original content
But mostly it's just an archive of public feeds that the content creators want to have promoted, if you don't want your content in public domain, don't put it into a public feed
10% to sell stuff, that's reasonable, go develop a website, acquire traffic then try to sell stuff.
Or open up a store and see what your monthly overhead is.
10% for a marketplace with traffic of buyers is not a bad fee.
Paypal fills a void since most people are not merchants, get a merchant account with a bank and see how much it costs to be able to accept credit cards.
Even accepting checks today costs money.
Almost no one has cash, so in a modern world you need a business bank account and merchant and all of it costs money.