I have a returned USB Digital Microscope here (older version than the one on the site currently).
There's a problem with either the software ("Brightwell") included, or the drivers. A really geeky person here could probably get it working.
In the box is what is included in the picture below. This product (as it is faulty) comes with no warranty.
RRP: $99.95
Price: $29.95 + $6.50 courier = $36.45

Manufacturer Specifications
Primary Function: Digital Microscope
Features:
- Digital Zoom: 1X, 2X, 3X
- Focus: 10mm Max
- Snapshot Button
- 8 LED
- LED brightness control dial
Image Specifications:
- Image Capture Format: BMP
- Resolution: 320x240, 352 x 288, 640 x 480, 1280 x 1024
Video Specifications:
- Recording Format: AVI
- Frames Per Second: 30 fps
- Resolution: 320x240, 352 x 288, 640 x 480, 1280 x 1024
EV Compensation: Auto
White Balance: Auto
PC Interface: USB 2.0
USB Cable Length: 55 Inches
Software: AMC CAMP + Brightwall
System Compatibility:
- AMC CAMP: Windows 98SE, ME, 2000, XP, Vista (32 bit versions)
- Brightwall: Windows 98SE, ME, 2000, XP
Power Source: USB
Dimensions
- Camera - L:110 x Diameter: 30 (mm)
- Stand - H:100, Base:68 (mm)
>> If you want it, PM me with your Name, Address, Phone and Email address and I will do up an invoice for you.
Cheers.