As noted by: Black Page We have two scenarios for the sFTP. Hosted at one of our places, or hosted online. Self Hosted ($459 [or $900 with server] with an annual renewal of $80. Local bandwidth consumption would be volatile) Server (old hardware allocated, new server hardware would be about $450 for base server) Software ($379 , you have to have an OS) Domain ($11 annually) Certificate ($69 annualy) Local bandwidth being consumed, possibly rising costs Service Hosted (using www.exavault.com as the case study) Variable by space requirements 5GB $118 annually or $11 per month 25GB $256 annually or $23 per month 50GB $378 annually or $35 per month 100GB $621 annually or $58 per month