First post so be gentle! I ordered these for my boyfriend yesterday and they arrived today. Looked online and the best deals I could find was £15 more. You get a set and also get the rain covers included. The quality is awesome on them too and GhostBikes service was excellent.
The specs from their website are:
The Oxford first time Panniers for sportbikes are packed with features...
* Specially adapted panniers for sports bikes
* Expandable to 48 litres with tensioning straps for stability
* 2 exterior pockets
* Raincovers included
* Unique third seatbelt safety strap secures under the seat