There's nothing wrong with purchasing used camcorders, as long as you know that they are still reliable for use. There are a lot of ways to do that, and generally speaking, there are also lots of advantages in purchasing used items like this.
If you can observe, updates in technology happens so fast. You may buy your mobile phone today for a thousand bucks, and the next thing you now is its that its price was already cut into half, because there is already another new model of that phone that was just currently released.
The same happens to your laptops, PCs, and even TVs. The price that your have paid today for a brand new item may not be all worth it, if the next day you'll find out that there is a much better unit that was currently released by the same brand.

Digital camcorder camcorder digital camcorder pocket pocket dig camcorder
US $55.99

Creative Vado Pocket Video Cam HD 8 GB Camcorder Black
US $90.00

•• Sony Handycam DCR VX2100 3 CCD MiniDV Digital Camcorder Pro Package ••
US $850.00

Panasonic AG HVX200 Camcorder Black 64GB 16GB P2 cards included
US $1,681.00

VCT U14 RELEASE TRIPOD PLATE for SONY Sachtler new
US $119.00

Sony NEX VG10 HD Interchangeable Lens Camcorder w 18 200mm Lens and Essentials
US $1,799.00

Wildview IDVR Scouting Camera STC TGLX2IR
US $64.95

Sony HDR PJ30V Handycam 32GB Full HD Camcorder w Projector and GPS Ultimate Bun
US $849.00
Although many people always go for the brand new ones, some of them have to sell their old items to make way for their new item. And thanks to those guys, we are now given the opportunity to have a quality product which is much cheaper compared to its original price.
In buying used camcorders, or any used products, you should also take into consider that even if you will not spend that much, your money should always be worthy of what you have purchased. If the item you are planning to buy may have some defects or malfunctions, you should clarify that before hand, so that you now that you are spending your money wisely.