This is a Dude truck that I've worked on. They are pretty cool trucks. I've seen them priced from $1k to $12.5k, so to me it's a question of what kind of shape it's in and what your willing to pay? But they are cool! The one that I worked on was a 383 with a/c truck.
Got this off the "Dodge Dude" site>
The Dude Sport Trim package was clearly more fun as far as options and looks went. The body length, C -shaped side stripe fit the contours of the trucks cab to Sweptline box and included the Dude logo. The truck was based more upon paint and tape appearance upgrades rather than comfort or engineering advancements. A good majority of the Dude pickups were 1971 model year trucks, so a truly rare find are the 1970 model years. Engines for these trucks included the 225 slant 6, the 318 small block V8, and the big block 383 V8. The Dude package could also be ordered with options like air conditioning, and bucket seats with center console.
Dude buyers were fortunate to be offered a choice of several of the Chrysler, “High-Impact,” paint color schemes. Six colors have now become very desirable among the collectors of these rare Dodge Trucks. They include; “Medium Burnt Orange,” “Sub-Lime Lime,” “Bright Yellow,” “Plum Crazy Purple,” “Bright Red,” and “Bright Turquoise.” The Dude paint package included a painted body color outside mirror arm and painted gas cap. The wheel rims were painted black on the black decal trucks, and white on the white decal trucks.