Out of curiosity, I ran the numbers on Immediate Annuity for $150,000. Obviously, there is inflation risk. When I had investigated in the past, getting a COLA severely reduced the initial payouts, i.e. there is no free lunch there.
Oh, the RE commission on the house is negotiable. I wouldn't go for more than 3% in particular with the change in commissions for the buyer's broker (and you would probably have to negotiate any commission for her). If the area is very "hot" her house might appeal to a big family - but, you can't force her to sell.
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