Is there any decent alternatives to having to fork out ridiculous money for Geniune Subaru Fuel Filters?.

Ive just bought one today from Subaru and when I was told the price I was horrified! $55.00 for a Fuel Filter!!?.Ive only had the car a few weeks and trying to get the serviceable items replaced as I don't know how long they have been on the car for so had to just pay up for that filter.

Surely there are cheaper and still decent quality Fuel Filters to be found?.

Also while Im Here can you guys confirm that the plugs I recently fitted are correct for 2001 WRX = NGK Plaltinum PFR6G . I'm now seeing on other sites guys using NGK PFR6B instead? whats the difference? the ones I just installed were given to me by the previous owner when I bought the car.....