Info on TRX tyres please

Hi all, Just wondering where the best place is for TRX tryes and are they really as expensive as i've been led to believe (around £200-250) I've actually got a pair of Colway remoulds (came with the car) but am i bit hessitant on fitting/using them but any type of feed back would be appriciated, Osker.

Try this guy, he emailed me offering loads, says he's got about 12 of them https://fordgranadamk2.forumotion.com/msg.forum?folder=inbox&mode=read&p=25