VW Golf 1.6 FSI auto 2004 - Exhaust at a realistic price - Chorum Records

I need a middle section of exhaust with a cat and two lambda sensors. I believe the VW part no. is 1KO 254 401 CX

VW want £803.53 inc. VAT, less £186 return rebate = £617.53

Where can I buy this part, with or without fitting, at a realistic price?