Best to get asymetric(half system) to get rid of cat. I would be happy to pay£400ish? Check its not fkd, a few are cracking at mounts. Bike should run ok on std ecu if dp one isnt available. There was someone on here modding std can to termi spec.
Yeah 400 - 500 about right second hand. I got mine for 400 in perfect condition, it is the half system so no cats now. I had to wait a LONG time for an exhaust to show up on eBay mind, there are loads there but most are overpriced or damaged.