I have a brand new set of S1 Exige mats that have been put in the car and removed. They came from Elise Parts and are really good quality and look the same as my OEM ones except the logo is in a different position, slightly higher. The Velcro sticky is unused.
Seeing someone wanted £300 for a black set these must be worth £1000, or a sensible number to be discussed. 
Located close to Derby, can post at cost.