I've just added some images of my artwork to my shop on Redbubble.com. https://www.redbubble.com/shop/Kathers+Art . They sell merchandise with uploaded images: stationery, mugs, clothing, clocks ... so if you fancy owning a Kathers Art image, have a look on the website. I've only ever had good feedback from purchasers.
My latest work, Along the Macclesfield Canal, is available in various formats on Redbubble, along with other paintings and photographs. Of course, the original paintings are also available to own.