Printable or Downloadable art is a pretty new thing in the art world and its an industry that is growing rapidly for a number of reasons.
It is the ultimate in instant gratification - something that can be missing from online shopping. You just download the file and if your printer is decent enough you can print it off immediately, pop it in a frame and stick it on your wall. Super quick and with minimum fuss. No waiting for the postman, shelling out for shipping costs or worrying about it being lost or damaged in transit. And you didn't even have to leave the house or change out of your pyjamas.
But you don't have to have access to a printer to benefit from buying art in this way, lots of people choose to take the file to their local print shop (after changing out of their pyjamas) But if you don't want to do that there are lots of online printers that you can just upload your file to.
Other plus points are that you can crop the file exactly how you want and choose the type of paper / card or material you want to print your artwork onto. You might decide to print as large poster, onto canvas, have it made into a jigsaw, mugs, t-shirts greeting cards or anything else you fancy. The great thing is that you are in control so you really can have unique works of art all over your home.
Did I mention it is also much cheeper because from the artists point of view you are doing a lot of the work for them often the bits that they don't enjoy so much namely the printing and shipping. Its pretty much a win win!