Wraps, how to keep them paying you longer?

[Sean Dezoysa]

I've heard the end buyer tends to refi you out after 5 years or so.

Anything to do other than give a fair rate at around ~2% above market?

For those who use a prepayment penalty, what is reasonable? I was thinking 10% of the home price at purchase, reduced by 1/360 for every month they've paid.