These two identical pieces of art, which are just canvas prints stretched over a wooden frame, were puchased for $15 at Kirklands. If you have not shopped there before, I urge you to find one and give it a try. It is a wonderful and affordable home decor store. I have been to one in a mall and one that was free-standing.
Also, Big Lots, TJ Maxx, Marshalls, and other discount stores carry artwork. Before you spend over $30 on supplies, think about purchasing at one of these stores.
These two pieces hang above my sofa in my formal living room. I hung them just slightly askew so they fill up the bare wall more. If I hung them side-by-side, they would look even more identical. Separating them and hanging one below the other gives your eye more stimulation. Plus, it goes well with my off-white furniture. Yes, off-white furniture - that is why this room is the FORMAL living room. My family room has dark brown everything.
What kind of art are you picking up on the cheap?