Provisioning is more important, not the SSO per se. If your enterprise clients are willing and able to do some kind of relatively hokey workaround, they are not

Provisioning is more important, not the SSO per se. If your enterprise clients are willing and able to do some kind of relatively hokey workaround, they are not really enterprise. At enterprise scale (let's call that 2500+ employees), this isn't feasible. Even at 1000 it's pretty borderline. That said it depends on the criticality of the service you are providing. If customer data is involved, enterprise will fork over the dollars. If not, then yes you need to price it correctly or in practical terms include it as a freebie for the other "indispensable" features that they are really going for.