We all do this - thumb through a catalog or peruse one online, see something we like, glance at the too-high-for-us price, mutter "eh" and keep going. Instead of being discouraged by the price of a truck shelf she saw online, Nydia made one herself from things she already had around the house and spent $1 instead of $129.
The inspiration truck shelf is by Pottery Barn Kids (now on sale, incidentally). Head over to Nydia's blog, The Evolution of Home, to see how she made her shelf. You may not have a truck lying around to dissemble, but perhaps you have another unused toy ready for new life as a shelf adornment.