That specimen you have there is much better condition than most of the examples I see at shows - most of them were treated like a cheap air gun for kids, hence they never got wiped down or the bore cleaned.
They aren't all that rare, but the ammunition is just getting more valuable as the fixed supply gets used up. Get inside the airgunner's circle to find one easily. They don't bring much money because they basically aren't practical for someone that is a shooter and not a collector.
Info from the Blue Book -
19000 mfg from 1968 to 1969
Standard Rifle Value, 100% condition : $200 or so,
Presentation Rifle, 100% : $235,
V/L Collectors Kit (case, gun cradle, 300 rounds, other stuff) : $350 in 100% condition
Daisy was licensed to manufacture airguns, BATF ruled the V/L was a firearm, so Daisy dropped the line.
Interesting guns, though (not many that aren't, I guess!).