You may not have to pay a "chunk of change" depending on how you want them to connect. If you wish them to connect using a method that they have not tried and tested before then it will cost you to get them to test the vpn software and certify it. This may lead to future issues though because if, for example, a service pack is released or a new version for your vpn software then Nice will have to test and certify that aswell before supporting it on any of their servers. So this route has a daisy chain effect. If you wish them to connect using a method that is already in use for some other customer then they won't charge you because they won't need to spend rescources testing it.