hi could some one please tell me how much this bike worth i am thinking of buying. here is the spec:- 05 T-Rex Frame, Ashton Fatty Trials Forks, Monty Trials Stem, Viz Trials Handlebars, HS 33 Silver Magura front and rear, Onza carbon rear break booster, Onza Headset, FSA Gold Bottom Bracket isis, Truvativ Hussefelt Trials Cranks, Trials / BMX Pedals with studs, Hope Hubs front and rear, Planet X Rear BMF Rim, Mavic 519 front rim Elgato Rear Tyre, Tioga Front Tyre, Single speed kit, Sora Rear Mech, STX 8 speed shifter