People rarely have an issue with the due on sale - they are more concerned with their continuing liability for the note if you don’t pay. Focus your sales pitch on that issue. And, don’t bring it up unless they do.
Bill: I have read yours and many others’ posts about buying subject to. I have also given advise to people based on my experience, and I am at a standstill. How do I explain to a seller the legality of purchasing their home subject to the existing mortgage? I live in an area where seller financing is not even excepted! Sort of like the Fred Flintstone era!! Thanks for your help.