Thanks for the review! Yes, the $18 payment is somewhat of an inconvenience, we agree, but it's required. Devices sold without that requirement are not FDA cleared devices, some lie & say they are, but that's false. Also, as an FYI, the payment goes directly to a medical professional and not to the StimTens company.
Thank you for the feedback and sorry for the wait on the 1100, that's been a popular model. Good news....we have plenty in stock now!