bushiwarrior

ok guys heres the situation im wanting to buy a sports cat for my07 wrx before i remap but have found it pricey to say the least, with prices at least twice what you would pay for a 2001-2005 model or classic. For example a sports cat from h&s for blobeye is around £300 and a hawkeye is around £600 why the big difference. Being a metal worker myself im sure its the same process to make both. Can anybody suggest a decent well price 100 cell sports cat for me?