I know the exhaust costs about £800, I presume that the chip is the Sports ECU and the filter would be the HSK. If it includes all fitting the price seems about right. I have some of those bits on my car. The exhaust is the business, having shown gains over other aftermarket exhausts in testing. The filter is standard stuff as is the Sports ECU. Set up by Ralliart, I don't think you can go far wrong.