I have a couple of prints for sale on Artstation Marketplace and my website. There's also currently a sale on! (I'm not sure until when) Take a look:
https://www.artstation.com/sirtimf/prints?print_type=art_poster
https://sirtimf.com/store/art_posters
Both are from projects in my portfolio:
Snow Hills
https://www.artstation.com/artwork/Alrabe
The Rambler
https://www.artstation.com/artwork/Zaeq88
Cheers,
Tim