New or "used" breast pump?

Hi all! Advice please. There is someone on Facebook selling two Medela breast pumps, the backpack, and all attachments and accessories for $75. Is this a good deal or should I wait and see what my insurance will cover? If I got the 'used' ones is there a life on them would I be worried about the pump going out on me? And I would definitely get all new attachments so none of that would be previously used. Just wanting to hear your advice!