I wish I had the kind of disposable income that allowed me to walk into my favorite galleries and buy the work that I love right off the walls, but let's get real, that's just not gonna happen anytime soon. So instead I will rely on the next best (affordable) thing: the internet.
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Buying art on the internet has really improved in the last five years. You can now find quality work from great unknown artists who you may not have found otherwise as well as prints of well-known established faves. So go grab a cup of joe, take a seat and start browsing.