Respironics Wisp - CPAP Cushion - 1094088

Not sure how this will play out but as I was doing some farther research I found a local outlet for supplies, also very interesting piece of info an additional invoice was in my package!!! The vendors copy of what they pay for supplies, sadly another rip off! the invoice stated $18.00 dollars each piece and I was charged $58.00 each piece to which I made contact with Sefinity Med and asked about the price difference, It was explained to me that invoice wasn't supposed to be in my package??? So I will not ever purchase from Sefinity Medical and I would encourage anyone else to do more research prior to purchasing from these type organizations.