Lets be honest, your typical reno be it a cup, trophy, 172, 182, Megane, R26 ...blaa blaa blaa will not deviate too much in price because lets face it, in 10 years time they will be 2 a penny. However, iconic, memorable models such as the clio williams, clio v6, 5 turbo and so forth will be the ones where smaller production numbers, quirckier characters and the first to set the trend/model will be worth more. Same can be said for other marques such as the Mk1 golf, 205 Gti, P1 subaru Impreza, etc etc.