Though it beat the Nomad in sales, the Parklane still did relatively poorly compared to other Ford models. It's important to remember that neither station wagon was well-known while in production.
The Nomad became an icon of the era only a decade later, when surfers started using them to transport their boards. I'm sure some of them used Parklanes as well.
These wagons are not exactly abundant on the used car market. They are aggressively collected by several people, as only about 15,000 of them were made. Suffice to say there are far fewer of them around today. If you keep your eye out, you can find them pop up on eBay fairly often. You can also sometimes find parts and other accessories there, such as manuals and advertising.