Given that they are charging as much as they are, it is liekly they are selling the higher quality model than the cheaper $50 models sold eslewhere. However, make sure you check around to see if they are truly showing 640x480, as many of these spy cam sites claims 640x480, but many are actually somewhat less than that. Still, though, I can't help but think I'd rather buy three $50 almost-as-good models than one slightly better model.in reference to:
"3) Reliability: Depending on where a vendor buy from, defective rate can be from 1% to 30%. We guaranty our pen cameras for 1 year. Don't get stuck with a cheap model!"
- Pen Cameras - Spy Pen / Body Worn Camera - Hidden Camera Pen Style Camcorders (view on Google Sidewiki)