So-called "mortgage" insurance is/was nothing more than term life insurance, only specifically directed to pay off the mortgage, and, as I recall, priced higher than regular term. It was a come-on. Not a bad idea, but it may have priced itself right out of the market. You can get term life for relatively little money, and, in the event of the unthinkable, at least the money's there to either pay off the mortgage or to do whatever else is needed.
Just for grins, I went to a term life rate quotes site and plugged in some bogus stats, just to see. I picked $300K, 25 years, 48 years old, non-smoker, in FL. The estimate from this site, which claims not to promote any specific insurance co. but uses composite estimates, was $927 per year. I bet you could find it even cheaper than that, depending upon the number of years, etc.
Heh, I ran it again for $500K, 15 years term and age 41, male, non-smoker. $310 per year. Good hunting.