FSBO,
Obviously I don’t know your overall financial picture, but I would consider this loan since you are paying 7.50% now.

Depends on your balance and ability to pay it off if necessary, you will be saving over 3% a year on your current loan. For every year that you save 2% or 3%, it would take an equal number of years that the rate would have to be 9.50%-10.50% for you to be averaging 7.50%

Prime would have to be 8%+ for you to be paying in the 7’s on the HELOC. The rate is attractive today, but about 9 months ago prime WAS 8%. It can move fast!

Talk to your tax advisor about the tax deductibility and possible limitations.