flu, I would say it’s down the toilet. I would say, it would be like renting your home for $9k over 8 months, which is $1130/month. Seems like a pretty cheap rent for a SFR. Do forget that if you refi, your interest payment will be lower by around $150/month from day one as well. After 2 years, that $3600. So, you save $3600 while “flushing down the toilet” $9k. If you consider $9k as flushing down the toilet, then the other side of that equation is she gets to live there for free over 8 months.
You’re right about what I did and am doing. Rates/rebate are not linear. Example would be, a no cost loan on absolute mortgage is 3.375% but if you bump to 3.5%, you get about $3500 back. So, for $24/month more, you get $3500 up front. If rates drop again in a few months, you can refi again and keep that $3500. If you do it 2-3 times a year, that’s over $7k, which more than enough to pay for your property tax, insurance, and part of the interest you “flushed down the toilet”.
So, my answer to ninaprincess is, it depends on what kind of loans you did. If you did it like me and get credit back, then no, if you do 0 point, then yes. If you do a no cost loan, then it depends on how long you plan to keep the place.