The gift shop
Nothing here ships, because nothing here exists. Every "purchase" opens the Best Friends donation page instead. You get a warm feeling. A shelter animal gets dinner. The artist would call that a fair trade.
Prices are suggestions for a donation of about the same amount. You choose the real amount on the Best Friends page. Downloads are free and real: right-click any painting in the collection, or use its Download button, to save a wallpaper.