Hi there,
We developed a plugin that will be published on CodeCanyon soon. We also have a product website about this plugin with more info, features, FAQ ’s, etc. On the ‘Download’ page of that website we want to show a download/pay button that links to the plugin on CodeCanyon.
Are there any official ‘Buy on CodeCanyon’ buttons/banners available for this?
But those are mostly for affiliate stuff.. So I would recommend you build your own, since I don’t know of any others..
We made our own:

Can we use it this way?
I don’t see why not – looks good!
Yeah, I think there’s no reason not to. And it looks really nice!
