I did a Google shopping search for mine, got it for about £50 I think.
They have since put price up, but a quick search now brought up http://www.molevalleyfarmers.com/mvf/store/products/john-whitaker-training-system-with-roller?_$ja=kw:John+Whitaker+training+aid|cgn:John+Whitaker+Training+System|cgid:1984240354|tsid:23289|cn:Big+Fish+Campaign|cid:63270754|lid:23994758194|mt:Exact|nw:search|crid:6722968834&gclid=COaui4bmpaoCFQkf4Qod8zuqbQ £63.
thanks for the help!!! i was hoping to find a cheaper second hand one or a faulty one or something, cant afford to buy a brand new one but really want one, somebody must have one they dont use anymore its just finding them xxx