1800.00
A 1926 Ford Model T pickup sold new for $366.
It really depends upon the new truck you get. Some used Trucks cost just as much as if you were to get a new. So when you go to your dealership ask about the difference.
eBay
Purchasing a new pickup will last much longer for you in the long run. You'll have the peace of mind that it will get you where you need to go and if you only use a few times a week the maintenance should be minimal.
A 1977 Chevrolet C10, 4X2, Long bed, Fleetside, sold new for $4,172.
There are a lot of different dealerships that would sell either a new or used pickup truck. You can just go to the dealer and see which one you like the best
A 1974 Chevrolet C10 pickup, Fleetside, Long Wheel Base, 2 wheel drive, sold for $3,153 brand new.
You can find used pickup trucks on the used section of Pickuptrucks.com, http://www.pickuptrucks.com/html/classifieds/new-and-used-pickups-for-sale.html. You could also put a "wanted" ad on craigslist.org to find an inexpensive pickup truck.
A new 1972 Chevrolet C10 1/2 ton fleetside short bed pickup truck sold for $2,796.
CarMax features both new and used vehicles, including pickup trucks. You can start your search for a truck at Carmax.com.
Irk