rx7 afm air flow meter

I have a mazda RX7 (AFM) Air Flow Meter. I bought a few months ago. When i put it on i could easly feel the difference in power. I paid 60.00$ For it i would like 50.00$ But make me and offer. I will ship it in a priority mail flat rate box from the post office that's 11.00$ to anyplace in...