One of the best gaming mice ever produced, Getting on a bit (1st introduced 3 years ago) but still excellent, even by today's standards - & very good for the money.
Direct link: http://www.amazon.co.uk/Logitech-MX518-Optical-Gaming-Mouse/dp/B0015R8M7U/
Previous lowest posted was at BlahDVD for £20.90 6 days ago: http://www.blahdvd.com/Hw/Logitech-MX-518-Optical-Gaming-Mouse-Mouse-optical-8-button-s-wired-USB/910-000616/product.htm
"Play to dominate with a gaming-grade mouse that delivers extreme response and unprecedented control."
* Wired, USB & Optical
* 1800 dpi optical engine: Enjoy pinpoint accuracy for precision targeting and high-speed handling
* Sculpted comfort grip: Increase comfort and play longer
* Polytetrafluoroethylene (PTFE) feet: Glide easily across almost any surface, so you can make quick, sweeping movements with no skips
* Durable build and longer-life buttons: Play hard. This mouse was designed to take a beating and keep on clicking
* In-play sensitivity switching: Shift between preset tracking levels (from 400 dpi to 1800 dpi) at the push of a button, so you can stop on a dime and take aim or accelerate at will without ever having to interrupt play
* Advanced software: Easily customise your mouse to every game you play.
* 8 programmable buttons: Gain the upper hand with added control and efficiency.
* Performance: 1 ms response time, 15 G maximum acceleration, 5.8 megapixels per second
+ Interfaces: 1 x USB - 4 pin USB Type A
+ Cables Included: 1 x USB cable
+ OS Required: Microsoft Windows Vista / XP
+ Peripheral / Interface Devices: CD-ROM
+ Manufacturer Warranty: Limited 3 years warranty
Clickable LINKS in first post below......
Just a reminder: Deal was originally posted for BlahDVD, but is NOW AT AMAZON