20 to 1 you have to do everything perfectly or they can get your house for pennies on the dollar. So, no missed or lost home insurance or property tax or mortgage payments.
Just like a reverse mortgage, only worse.
I dug up some fine print it says they can increase their take if you don't keep up your house and its property value suffers as a result (so like a lease, only worse)
You also cant sell your house for 3 years and cannot rent it out unless you buy them out. (who owns the house at this point anyway!)