Just ordered myself 4 from here, £65 each delivered, this is by far the cheapest I have seen!!

http://www.camskill.co.uk/products.php?plid=m12b99s662p0&tbv=TOYO_TYRES_/_TRACKDAY-TRACK_DAY_/_TOYO_R888_-_TOYO_R_888_-Track_Day_Tyres_-_Trac kday_Tyres_-_Motorsport_Tyres_R15_-_195/50/15,_195/50_R15

He has 4 left on the shelf, they also have all sorts of other trackday tyres at excellent prices.

Very helpful guy.