Photos sell

I would like to give visitors to have the option to buy my photos and also the ability to create galleries specifically to my clients that only they could view and ask prints. Now Square Space have been doing a beautiful work in showcasing my art but I have been testing Smugmug ( ) and they also have beautiful designs and allow me to do just that. I need to know if Squarespace have a good alternative to what smug mug does or I am walking.I notice that Squarespace have an e-commerce plan but nothing there convinced me that I would be able to sell my prints thru a good printing company for progfit like sumgmug.Anyone prove me wrong?