"Adriana" , by Mary Larson, SOLD for 3,000 peanut butter & jelly sandwiches.
In Mary's own words from her website:
I am an artist & a nurse who works with the homeless. The subjects of my portraits are the patients I help take care of at the clinic where I work. Many of the sitters in my portraits are homeless; some are not. All have been touched by homelessness. There are items that are luxuries for people who are homeless; socks (often worn 2 months at a time), gloves, hats, underwear, & a cup of coffee. Instead of putting a dollar value on my portraits, I sell them in exchange for items that are given to our patients at the clinic & to other organizations that provide for those in need in Seattle.