Pretty good deal for some mid-range MTB shifters. I would be surprised if you could find these cheaper new.
Just noticed -- "Comes complete with SP41 gear cables and outers". Makes this a better deal, considering you'd pay another couple of quid for those usually.
Edit: Just adding that they're 9-speed shifters. Compatible with 9/27 speed bikes. (9 for using only right hand shifter, and 27 using the right and left shifter with a triple on the front -- though you might be able to get them working with a double, as long as you set it up with a 'ghost shift' of some sort)