You could offer a 'dynamic pricing' of steem dollars in your store. The problem is that if no one accepts SBD for their goods and services, then there is no use case for SBD, but people are only willing to accept SBD when the value is closer to the peg. Seems like we are stuck in a Catch-22, eh?

I think you'll find some additional customers from within the Steem community that you may not have had if you accept SBD.