Yes amazon! Cheaper than babies r us, and ships free with amazon prime. I'm not sure you need extra filters though....the gunk doesn't come anywhere close to the filter, and you get a couple extra anyway.
I got mine on Amazon but HATE IT. I just feel like you have to suck REALLLYY hard and it still barely does anything and the filters sometimes fall out so I'm over that. I just use the saline and the little sucker.
Re: Nosefrida